Lianfa stainless steel pipes & valves Co.,Ltd

Lianfa Stainless Steel Pipes & Valves (QingYun) Co.,Ltd. specializes in manufacturing stainless steel pipe fittings and ball valves, sanitary fittings and valves, camlock couplings, high-pressure pipe fittings used in oilfields, flanges, and a series of carbon steel valves. The company produces forged pipe fittings and flanges using precision investment casting and mould forging, supported by machining operations such as drilling, boring, turning, threading, and socket-welding machining. Manufacturing processes include forging with chemical composition analysis, weight checking, pressing, optional heat treatment, mechanical & hardness testing, surface preparation, and subsequent machining with final dimensional inspection, marking, cleaning, and surface preservation before delivery. Welding and heat treatment capabilities include automatic ring-seam water-cooled welding, submerged-arc automatic surfacing, TIG and plasma surfacing, and heat treatment equipment for tempering and post-weld heat treatment. Quality and certification coverage includes ISO9001, API (API Specification Q1 for manufacture of forged pipe fittings and flanges), CE, UKAS, and additional registrations/certifications including TSSA (Canada) and water works association system certification (Japan).

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