1,manufacturer 2,good quality and competitive price 3,support the third party inspection 4,ISO cert 5,quick delivery 1,Name: pre galvanized steel pipe manufacturer 2,Standard: BS1387-1985, GB/T3091, ASTM A533,Material: Q195-Q2354,OD: 1/2"-4" (20-114mm)5, WT: 0.8-2.3mm6, Length: regular length, 5.8m,6m; according to client's request.7, Secondary Processing: threading, cutting, marking, bevelling, ...