Introduction to 316 Neck Welding Flange
316 necked butt-welding flanges are categorized by the stainless steel 316 material, commonly abbreviated as 316 necked butt-welding flanges or stainless steel necked butt-welding flanges.
316 stainless steel flanges, with the addition of Mo element, significantly enhance their corrosion resistance and high-temperature strength. They can withstand temperatures up to 1200-1300 degrees Celsius, making them suitable for use under harsh conditions.
316 Socket Weld Flanges offer superior corrosion resistance compared to 304 Socket Weld Flanges, and exhibit excellent corrosion resistance during the pulp and paper production process. Moreover, 316 stainless steel also resists erosion from marine and corrosive industrial atmospheres.
Features of 316 Neck Weld Flange
Features all the advantages of 304 socket weld flanges, with added Mo element in the material making it more resistant to corrosion and higher temperature than 304 stainless steel flanges.
Model and Specifications
DN15-DN4000
Pressure Grade
PN2.5;PN6;PN10;PN16;PN25;PN40;PN63;PN100;PN160;PN250;PN320;PN400;
Class 150;Class 300;Class 600;Class 900;Class 1500;Class 2500;
Sealing Surface Type
Rounded Face (RF), Flat Face (FF), Milled Face (MFM), Concave Face (FM), Convex Face (M), Tongue and Groove (TG)
The concavo-convex flanged socket weld (MFM) is for配套 use.
316 Neck Welding Flange Common Material
316、316L、0Cr17Ni12Mo2
Standard of Execution
Mechanical Department Standards, Chemical Industry Standards, Electrical Standards, National Standards, American Standards, German Standards, Japanese Standards, etc.
Connection Type
Weld the neck to the pipe, insert a gasket, and tighten the bolts.
Production Process
Pure forging, suitable for necked butt-welding flanges (SO) and necked socket-welding flanges (WN); steel plates are applicable for butt-welding flanges.
Procurement Recommendations
1: Recommend purchasing from a reputable neck-welded flange manufacturer with a certain production scale.
2: Manufacturers of flanges are required to provide material inspection reports and related documents for necked butt-weld flanges.
3:颈对焊法兰 must have corresponding specification and model steel stamping and identification.
