... ISO certification. SSAW Spiral Welded Steel Pipe: 1.Grade: GR.A,GR.B,X42,X52,X70 2.Standard: API 5L,API ... 8-12mmLengthLess than 12mSteel materialQ195--- Grade B, SS330, SPHC, S185Q195--- Grade C, CS TypeB, SS330, SPHCQ195--- Grade D,SS400,S235JR,S235JO,S235J2StandardBS EN ... Beveled ends 2) Plain ends 3) Protected with plastic caps b) Surface treatment:1) Bared2) Galvanized3) Paint4) Coatig protection: ...