Small-bore seamless steel tubes refer to seamless steel tubes with a small outer diameter. Small-bore seamless steel tubes can also be categorized into seamless small-bore steel tubes and straight-seam (also known as welded) small-bore seamless steel tubes, generally with outer diameters ranging from 3mm to 89mm. All of them can be collectively referred to as small-bore seamless steel tubes.

Small Bore Seamless Steel Pipe Alias: Small Bore Seamless Tube or Small Thick-Walled Steel Pipe Property: Seamless steel pipe with a small outer diameter Type: Small Bore Seamless Pipe, Small Bore Welded Pipe Outer Diameter: 4mm-89mm Length: 8 m

Small-bore seamless steel tubes are circular, square, or rectangular steel bars with a hollow cross-section and no seams around the edges. Seamless steel tubes are made from ingots or solid billets by piercing to form the rough tube, which is then hot-rolled, cold-rolled, or cold drawn into the final product. These tubes feature a hollow cross-section and are extensively used as pipelines for conveying fluids. Compared to solid steel bars like round steel, seamless steel tubes are lighter in weight while maintaining equivalent bending and torsional strength. They are an economical cross-section steel used for manufacturing structural components and mechanical parts, such as oil drilling rods, automotive drive shafts, bicycle frames, and steel scaffolding used in construction projects.

Hollow sections can be categorized by production methods, such as hot-rolled, cold-rolled, cold drawn, and extruded, with hot-rolled seamless tubes typically produced on automatic rolling machines.

Solid billets are inspected and cleared of surface defects, cut to the required length, centered on the end face of the piercing end, then sent to the heating furnace for heating. They are pierced on a piercing machine while continuously rotating and advancing, gradually forming a hollow cavity inside called a rough tube under the action of the roller and mandrel. The rough tube is then sent to an automatic pipe rolling machine for further rolling and passed through a sizing or reducing machine to achieve the specified diameter. Producing hot-rolled seamless steel tubes using a continuous tube rolling mill is a more efficient method. To obtain smaller-sized and higher-quality seamless tubes, cold rolling, cold drawing, or a combination of both methods must be used. Cold rolling is typically performed on a two-roll mill, where the steel tube is rolled in a circular die formed by a variable-section circular slot and a stationary conical mandrel. Cold drawing is usually carried out on a single-chain or double-chain cold drawing machine. The extrusion method involves placing the heated billet in a sealed extrusion cylinder, with a piercing rod and extrusion rod moving together to force the extruded material out of a smaller die, producing steel tubes with smaller diameters.

Shandong Qianlin Metal Materials Co., Ltd. is a large enterprise specializing in the production and sales of seamless steel pipes, collaborating with major steel pipe factories such as Tianjin Da Wuwang Seamless Steel Pipe Factory, Baotou Steel Pipe Factory, Chengdu Seamless Steel Pipe Factory, Anshan Steel Pipe Factory, and Baoshan Steel Pipe Factory. These include seamless pipes, precision drawn pipes, cold drawn pipes, precision rolled pipes, precision extruded pipes, precision drawn seamless pipes, seamless pipes, cold drawn seamless pipes, precision rolled seamless pipes, precision extruded seamless pipes, square pipes, seamless square pipes, rectangular pipes, square-rectangular pipes, seamless square-rectangular pipes, Q345BCDE seamless square pipes, grouting pipes, pipe shed pipes, advanced small conduits, grouting steel flower pipes, 20# seamless steel pipes, 35# seamless steel pipes, 16Mn seamless steel pipes, Q345B seamless steel pipes, Q355B seamless steel pipes, 45# seamless steel pipes, 20Cr seamless steel pipes, 40Cr seamless steel pipes, 20G seamless steel pipes, 35CrMo seamless steel pipes, 42CrMo seamless steel pipes, and 27SiMn seamless steel pipes. The legal representatives of these companies are shareholders and partners. Since its establishment, the company has consistently adhered to the business philosophy of "surviving on quality, developing on products, ensuring cooperation with reputation, and winning customers with service." Under this guiding principle, the company has been selling and distributing products year-round as a general agent, including seamless pipes, stainless steel seamless pipes, and alloy pipes from several major steel mills such as Tianjin Seamless Steel Pipe Factory, Chengdu Pangang, Baogang, Baoshan, and Anshan. The company possesses modern large outdoor and indoor storage facilities, with a stock of over 3,000 tons.

Shandong Qianlin Metal Material Co., Ltd. boasts advanced cold drawn seamless tube production equipment and highly skilled employees, capable of customizing various specifications and materials of cold drawn seamless steel tubes. Our products are known for their high precision, tight tolerances, and timely delivery. Welcome to place your order. Materials include: 10#, 20#, 45#, 16Mn, 20Cr, 40Cr, 15CrMo, 35CrMo, etc. The standard followed is GB/T3639-2009. Applications: Suitable for mechanical structures, hydraulic equipment, cylinders, drums, component manufacturing, auto (motorcycle) parts, diamond thin-wall drill bits, power towers, lightning rods, communication towers, monitoring towers, lightning protection facilities, process towers, wind lightning rods, power plant lightning rods, electric power lightning rods, power station lightning rods, and transformer station lightning rods. Production range and tolerances: 10-108mm, 1-14mm, tolerance of 2-10 thousandths. Product features: The cold drawn seamless tubes produced by our company have no lumps, scratches, cracks, or peeling, with smooth and bright internal and external surfaces, significantly exceeding those of ordinary cold drawn tubes. The small tolerance is 2 thousandths. Therefore, they are commonly used in fields with high requirements for accuracy and luster, aiming to improve product quality and reduce processing costs.

Shandong Qianlin Metal Material Co., Ltd. specializes in: domestic high-pressure alloy pipes, materials including A335P11, P91, P92, 15CrMoG, 12Cr1MoVG, 1Cr5Mo, Cr5Mo, Cr9Mo, 0Cr9Mo, 15CrMo, 35CrMo, 12Cr1MoV, 10CrMo910, A335P91, 1Cr2Mo, 15MnV, 37Mn5, 10Cr9Mo1VNb, 15NiCuMoNb5, 12Cr2MoWVTiB, WB36, SA106B, ST45.8-III, etc.; carbon steel high-pressure boiler tubes with GB5310-95 material: 20G, 20MG, 25MG, 15MoG, 20MoG; GB6479-86 material: 10, 20G, Q345, Q390, 10MoVNb, 12CrMo, 15CrMo, 12Cr2Mo; petrochemical cracking pipes with GB9948-86 material: 10, 20, 12CrMo, 15CrMo, 1Cr2Mo, 1Cr5Mo; hydraulic props tubes with GB/T17398-1998 material: 27SiMn; structural tubes with GB/T8162-1999 material: 10, 20, 35, 45, 40Mn2, 45Mn2, 27SiMn, 20Cr, 40Cr, 20CrMo, 35crMo, 38CrMoAl, 50CrV, 30CrMnSi; liquid conveyance tubes with GB/T8163-1999 material: 10, 20, Q295, Q345; oil well tubing and coupling material with API SPEC 5CT material: J55, N80, etc.

Shandong Qianlin Metal Materials Co., Ltd. offers services including: hole punching, cutting, sawing, flatting, chamfering, drilling, honing, threading, boring, degreasing, packaging, centerless grinding, internal hole boring, and oxygen-free annealing. We customize special specifications and special material seamless steel pipes, rectangular steel pipes, and various non-standard steel pipes. Delivery is timely, prices are low, quality is superior, and original material certificates or copies are provided. We operate normally on holidays and can handle truck and rail transportation. Bulk orders can be directly shipped from the steel mill, and we also offer acceptance and settlement services.

Shandong Qianlin Metal Materials Co., Ltd. is a trading company specializing in Q345B, 20#, 45# seamless steel tubes. For over a decade, the company has adhered to the philosophy of sincere cooperation and mutual benefit, striving to provide excellent service quality to its customers. The company mainly distributes seamless steel tubes produced by major steel mills such as Yantai Lubao, Neimenggu Baogang, Tianjin Da Wugang, Jiangsu Tianjun, Hubei Xinye Steel, Heilongjiang Jianlong, Hengyang Hualing, Linzhou Fengbao, Henan Huifeng, Shandong Mulong, Shandong Juna, Qingzhou Lvxing, and Yantai Yuahu. The operating diameter range is 22-720mm, with wall thicknesses of 2.5-50mm. Special materials and specifications can be ordered and processed upon customer request. The company currently maintains an inventory of over 30,000 tons.

Shandong Qianlin Metal Material Co., Ltd. is located in the East Ring Road of Liaocheng City, with an advantageous geographical location and convenient transportation, providing customers with more convenient shipment conditions. Our sales range now covers all parts of the country. Precision drawn tube prices, precision drawn tube manufacturers, precision drawn tube sales companies, precision drawn tube contact information. Our company is a large enterprise integrating production and sales of seamless steel tubes, and is a cooperative partner of various steel tube factories including Tianjin Da Wuxiao Steel Tube Factory, Baotou Steel Tube Factory, Chengdu Seamless Steel Tube Factory, Anshan Steel Tube Factory, Baosteel Steel Tube Factory, offering precision drawn tubes, cold drawn tubes, precision rolled tubes, precision drawn steel tubes, cold drawn steel tubes, precision rolled steel tubes, precision drawn seamless tubes, cold drawn seamless tubes, precision rolled seamless tubes, cold drawn seamless tubes, square tubes, seamless square tubes, rectangular tubes, square rectangular tubes, seamless square rectangular tubes, Q345BCDE seamless square tubes, seamless pipes, seamless steel pipes, 20# seamless steel pipes, 35# seamless steel pipes, 16Mn seamless steel pipes, Q345B seamless steel pipes, Q355B seamless steel pipes, 45# seamless steel pipes, 20Cr seamless steel pipes, 40Cr seamless steel pipes, 20G seamless steel pipes, 35CrMo seamless steel pipes, 42CrMo seamless steel pipes, 27SiMn seamless steel pipes, etc. The legal representatives of all these enterprises are partners in the form of shareholders.

Fine Drawn Steel Pipe (Fine drawn tube, Cold drawn tube, Fine drawn bright tube) Technical Features: Inner and outer diameter accuracy can be controlled at ≤0.05mm, ellipticity ≤0.1mm, smooth and bright outer surface, free from cracks and scaling, small wall thickness tolerance, and good straightness. Steel pipe weight calculation formula: [(Outer diameter - Wall thickness) * Wall thickness] * 0.02466 = kg/m (weight per meter). We can provide services such as cutting, chamfering, oil cleaning, packaging, centerless grinding, and cold working for steel pipes.

Cold Drawn Steel Pipe

Production Range: OD 16-40 x 2-10 cold drawn seamless steel tubes

Prices for small-diameter cold-drawn seamless steel tubes in Liaocheng market, from south to north, show a significant price advantage. Our company, with superior quality, low prices, and complete specifications, leads in the Liaocheng (national) market. Special specifications can be custom-made. Welcome all new and old customers to call for negotiations.

Characteristics of cold drawn precision steel pipes

1. Smaller outer diameter.

2. High precision for small batch production.

3. Cold drawn finished products offer high precision and a good surface finish.

4. The cross-sectional area of steel pipes is more complex.

5. Enhanced steel pipe performance, with denser metal.

Two, Precision rolling mill produces precision drawn steel pipes (precision drawn tubes, cold drawn tubes, polished drawn tubes)

Production Range: 8-219mm in diameter, wall thickness ranging from 0.5mm to 30mm. Our precision drawn steel pipes (precision drawn tube, cold drawn tube, precision polished tube) have a high degree of precision, achievable within 3 microns, and feature high smoothness, even wall thickness, and free from any scratches, marks, or burrs. Custom production available, minimum order quantity: 1 ton. Materials: 10#, 20#, 35#, 45#, 40Cr, 16Mn, etc. Please call for detailed inquiries and orders!

Note: Our precision drawn steel pipes (precision drawn tube, cold drawn tube, precision polished tube) offer a significant price advantage with wall thickness of 2mm or more and a tolerance of ±0.05mm.

Categories

Extruded Seamless Steel Pipes, Extruded Hydraulic Seamless Steel Pipes, Cold Drawn Extruded Seamless Steel Pipes, Cold Rolled Extruded Seamless Steel Pipes, High Precision Extruded Seamless Steel Pipes, Extruded Bright Seamless Steel Pipes.

Fine drawn capillary tubes (stainless steel capillary tubes) are mainly used in: chemical industry, environmental protection engineering, engineering, grain processing, beverage production, brewing industry, instruments and meters, machinery and equipment, air conditioning and refrigeration, car reducers, motorcycle reducers, hydraulic cylinders, pneumatic cylinders, and gas springs. The degree of cold-rolled fine drawn capillary tubes is high, and can be controlled within ±0.025 wire. The steel pipes can ensure bending, flattening, expanding, and reducing. The products are free for woven bags, plastic packaging, and can also be customized for wooden box packaging!

Features

Pipe with no oxidation layer on the inner and outer walls, capable of withstanding high pressure, no leakage, high precision拉伸, high luster, cold bending, necking, flattening without cracks, surface anti-rust treatment. Suitable for hydraulic system pipes, injection molding machine pipes, hydraulic press pipes, shipbuilding pipes, EVA foam hydraulic machinery, precision拉伸 hydraulic cutting machine pipes, shoe-making machinery, hydraulic equipment, high-pressure oil hoses, hydraulic oil hoses, sleeve couplings, pipe fittings, rubber machinery, forging machinery, die casting machinery, construction machinery, concrete pump trucks for high-pressure pipes, waste collection vehicles, automotive industry, shipbuilding industry, metal processing, diesel engines, internal combustion engines, air compressors, construction machinery, agricultural and forestry machinery, etc. Fully capable of replacing imported seamless steel pipes of the same standard.

Applications for edited products include: Machinery and Equipment: woodworking machinery, ceramic machinery, papermaking machinery, glass machinery, food machinery, construction machinery, plastic machinery, textile machinery, jacks, hydraulic presses, etc.; Electrical Product Components: motor shafts, fan shafts, sewing machine shafts, etc.; Furniture: especially exported metal furniture such as coffee tables, chairs, outdoor furniture; Metal Utensils: gardening tools, barbecue grill frames, screws, anti-theft locks, etc.; Hardware Accessories: such as guides, machine keys, nuts, screws, round nails, hexagonal nails, octagonal nails, and various standard components of different specifications; Automotive and Motorcycle Parts, etc.

Since its establishment, the company has consistently adhered to the business philosophy of "surviving through quality, developing through products, securing cooperation through credibility, and winning customers through service." Guided by this philosophy, the company has been selling and distributing products year-round as a general agent, including seamless steel tubes from major steel mills such as Tianjin Seamless Steel Tube Factory, Chengdu Pansteel, Baogang,冶钢, Baosteel, Angang, and others, as well as stainless steel seamless steel tubes and alloy pipes. The company boasts modern large outdoor and indoor warehouses, with a storage capacity of over 3,000 tons.

Steel Pipe Production Process: Round steel - Cutting - Heating - Piercing - Billet - Inspection - Pickling - Polishing - Lubrication and Air Drying - Precision Drawing - Inspection - Trimming - Bunding - Labeling - Final Packaging —— The company now owns a series of production equipment and a complete production line. Modern equipment includes: LG20, LG30, LG50, LG60, LG80, LG120, LG150, LD8-58 three-roller mill, as well as hot rolling, hot expanding, cold drawing, precision rolling, and cold drawing equipment, etc.

Qianlin Metal Services Advantages: All pipes are produced and sold in-house, ensuring quality and offering clear price advantages. We handle both wholesale and retail — starting with just one piece, whether it's a sample or a small batch order, we are fully committed. All pipes come with original material certificates or copies, giving you peace of mind. Samples can be sent first, and orders will be placed after confirmation of the goods. We send samples for approval before shipping to ensure your satisfaction. For out-of-stock items, we can arrange for them from partner suppliers, achieving one-stop procurement for you. We save you both money and trouble. We handle rail and truck transportation for you, with delivery to surrounding provinces in 1 day and nationwide in 3 days.

Our cold drawn seamless tube production equipment and highly skilled staff can customize various specifications and materials of cold drawn seamless steel tubes for you. Our products are characterized by high precision, tight tolerances, and timely delivery. Welcome to place your order. Materials include 10#, 20#, 45#, 16Mn, 20Cr, 40Cr, 15CrMo, 35CrMo, etc.

Applications: Suitable for mechanical structures, hydraulic equipment, cylinders, drums, parts processing, automotive (motorcycle) accessories, and diamond thin-wall drill bits. Production Range and Tolerance: 10-108mm x 1-14mm, tolerance 2-10 microns.

Product Features: Our cold drawn seamless precision pipes are free of surface defects such as pits, scratches, cracks, and peeling. Both the inner and outer surfaces are bright and smooth, with a much higher precision level than ordinary cold drawn pipes, featuring a small tolerance of 0.02mm. Therefore, they are commonly used in fields with high requirements for precision and finish to enhance product quality and reduce processing costs.

The company can customize various special specifications, special material seamless steel tubes, rectangular steel tubes, and various profile steel tubes. Delivery is timely, prices are low, quality is excellent, and original material certificates or copies are provided. We operate normally on holidays and can handle road and rail transportation. Large quantities can be directly shipped from the steel mill. We also offer acceptance and settlement services.

Qianlin Metal Co., Ltd. Seamless Steel Pipe Catalog

⊙3*1

⊙5*1*2

⊙8*1*2

⊙10*1*2

⊙12*1*2*3

⊙14*1*2*3*4

⊙15*1*2*3

⊙16*1*2*2*3*4*5*6

⊙18*1*2*2*3*4*5*6

⊙20*1*2*2*3*4*5*6*8

⊙22*1*2*2*3*4*5*6*8

⊙25*1*2*2*3*4*5*6*8

⊙32*2*3*3*4*5*6*8*10

⊙40*2*3*3*4*5*6*8*10*12

⊙50*3*5*6*8*10*12*14*15

⊙57*3*5*6*8*10*12*14*15

⊙60*3*5*6*7*8*10*14*16*18*20

⊙73*5*6*7*12*14*16*18*20

⊙80*4*6*8*10*12*14*20

⊙89*4*5*6*8*10*12*14*16*18*16*18*20 

⊙95*6*8*10*12*14*16*18*20*25

⊙102*5*6*8*10*12*14*16*18*20*22*25*28*30 

⊙108*5*6*8*10*12*14*16*22*25*28*30 

⊙114*5*6*8*10*12*14*16*18*20*22*25*28*30 

⊙121*5*6*8*10*12*14*16*18*20*22*25*28*30 

⊙127*5*6*8*10*12*14*16*18*20*22*25*28*30 

⊙133*5*6*8*10*12*14*16*18*20*22*25*28*30 

⊙140*5*6*8*10*12*14*16*18*20*22*25*28*30 

⊙146*5*6*8*10*12*14*16*18*20*22*25*28*30 

⊙152*6*8*10*12*14*16*18*20*22*25*28*30 

⊙159*6*8*10*12*14*16*18*20*22*25*28*30*35 

⊙168*6*8*10*12*14*16*18*20*22*25*28*30*35*40 

⊙180*6*8*10*12*14*16*18*20*22*25*28*30*35*40 

⊙194*6*8*10*12*14*16*18*20*22*25*28*30*35*40 

⊙203*6*8*10*12*14*16*18*20*22*25*28*30*35*38*40*45*50*55*60 

⊙219*6*8*10*12*14*16*18*20*22*25*28*30*35*38*40*45*50*55*60 

⊙245*7*16*18*20*22*25*28*30*35*38*40*45*50*55*60*65 

⊙273*7*8*10*12*14*16*18*20*22*25*28*30*35*38*40*45*50*55*60*65*70 

⊙299*8*9*10*12*14*16*18*20*22*25*28*30*35*38*40*45*50*55*60*65*70 

⊙325*8*9*10*12*16*18*20*22*25*28*30*35*38*40*45*50*55*60*65*70 

⊙377*8*9*10*12*14*16*18*20*22*25*28*30*40*45*50*55*60*65*70 

⊙426*8*9*10*12*14*16*18*20*22*25*28*30*40*45*50*55*60*65*70

Company Philosophy: "Compare quality for the same product, compare price for the same quality, compare service for the same price, and compare reputation for the same service." Corporate Spirit: "Unity and perseverance, hard work, dedication, and pragmatism in pursuit of innovation." The company seeks sincere cooperation in its field to enhance the comprehensive strength of the enterprise.

Cylinder Tubes, Honing Tubes, Grinding Tubes, Stainless Steel Cylinder Tubes, Hydraulic Cylinder Tubes, Hydraulic Steel Tubes, Cold Drawn Honing Tubes, Hydraulic Cylinder Casing, Piston Rod Processing, Cylinder Tubes