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BV is a world-renowned ship classification society that is recognized for its thorough and comprehensive certification processes. This certification represents BV’s assurance that the flange products have been manufactured to meet the highest quality standards and comply with international regulations. The certification process starts with an assessment of the flange product design, materials, and manufacturing […]

NACE 316L stainless steel pipe fittings are materials with excellent corrosion resistance and strength, which are widely used in fields such as petroleum and natural gas. The sulfur and phosphorus elements are important factors affecting the corrosion resistance of steel, so it is necessary to control the sulfur and phosphorus elements in the NACE 316L stainless

Austenitic stainless steel flange F304L F316L F321 is softened by solution treatment. Generally, the stainless steel flange F304L F316L F321 is heated to about 950~1150 ℃. After a period of heat preservation, the carbide and various alloy elements are fully and evenly dissolved in austenite, and then rapidly quenched and cooled. Carbon and other alloy

1. Problem posing The unified technical regulations usually include that “austenitic stainless steel flange vessels are used in environments that may cause intergranular corrosion, and solution or stabilization treatment shall be carried out after welding”. Such requirements have their own rationality. However, even if the designer puts forward this item in the technical requirements of the

Flanges, Butt welding Fittings, Socket Weld Fittings, Threaded Fittings – EN10204 3.1 Inspection Certificate Cangzhou Enfei Pipe Equipment Co., Ltd. strictly controls product quality and strictly tests the following products, including: Flanges:  Slip-On Flanges,Weld Neck Flanges,Blind Flanges, Lap Joint Flanges, Ring Type Joint Flanges,Threaded Flanges,Socket Weld Flanges, Reducing Flanges, Plate Flanges, Forged Flanges,Square Flanges,Spectacle Blind