Hebei Haihao Group Premium Pipeline Equipments Co., Ltd.
Hebei Haihao Group Premium Pipeline Equipments Co., Ltd.
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：