The production process of pipe fittings mainly includes forming, heat treatment, bevelling, surface treatment, non-destructive testing, marking, packing.
Different pipe fittings have different forming methods.
Seamless pipe fittings are pipe cutting. The process flow is cutting, bulge-forming, end-cutting, heat treatment, bevelling, surface treatment, non-destructive testing, marking, packing.
Welded pipe fittings are plate cutting. The process flow is cutting, press-forming, trimming, welding, bevelling, surface treatment, non-destructive testing, marking, packing.
Ductile cast iron pipe fittings are casting. The process flow is pre-expand beads, model shaping, bond&model form, coat painting, model lay box, molten iron melting, nodular treatment, pouring, polish&clean, zinc paint spray, mechanical machining, hydraulic press test, cement lining, bituminous paint externally, finished products packing.
Quality Inspection：
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