... in producing and marketing high-pressure pipe manufacturers, the products have forged flanges, elbows, three different-diameter pipe(size head),insulation joints, insulating flange ... , such as various types of pipe fittings, can be GB,HG,JB,SY,HGJ,SH,ASME,ANSI,APL.MSS-SP,DIN,JIS ... standards for the production of different tubes and flanges. Our products enjoy ...