Shandong Qianlin Metal Materials Co., Ltd. boasts advanced cold drawn seamless tube production equipment and highly skilled staff, capable of custom-making various specifications and materials of cold drawn seamless steel tubes. 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. The standard followed is: GB/T3639-2009. Applications include: mechanical structures, hydraulic equipment, cylinders, drums, parts processing, auto (motorcycle) accessories, diamond thin-wall drill bits, power towers, lightning rods, communication towers, monitoring towers, lightning protection systems, process towers with lightning rods, power plant lightning rods, power transmission line lightning rods, and transformer substation lightning rods. Production range and tolerances: 10-108mm, 1-14mm, tolerance 2-10 thousandths. Product features: Our cold drawn seamless tubes are free of surface defects such as pitting, scratches, cracks, and peeling, with bright internal and external surfaces, far exceeding those of ordinary cold drawn tubes. The tightest tolerance is 2 thousandths. Therefore, they are commonly used in fields with high requirements for accuracy and finish to enhance product quality and reduce processing costs.