... ,Dia40mm,Dia50mm,Dia75mm,Dia110mm,Dia160mm,Dia200mm,Dia250mm.1) American standard (ASTM Sch 40 & Sch 80, SDR 21, SDR 26, SDR41)2 ... , GB 5836, GB 14823, GB 13664)7) International standard (ISO 4422, ISO 3633, IEC 614, GY 3050) Besides,the nails,washers,bolts ...