JIS B2220 Slip On Flange Products,JIS B2220 Slip On Hubbed Flange-Hebei Haihao Group
Haihao Group manufacture steel pipes,butt welding pipe fittings,forged pipe fittings and flanges products more than 30 years,the products according to standard ANSI/ASME B16.5,BS 4504,DIN,JIS B2220,EN 1092,GOST, ...
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