Seamless Steel Pipes Standards: ASTM , GB, JIS, DIN ,EN,GOST and so on passed the ISO9001:2000,ISO14001:2004 and CE/PED cert Seamless Steel PipesFeatures: ... A511,JIS349, DIN17456, EN,GOST and so on 2) Our products are corrosion and high-temperature resistant3) The main standards ... 310S, 347H,309.317.0cr18N9, 00Cr19Ni10, 0Cr17Ni12Mo2,00Cr17Ni14Mo2,1Cr18Ni9Ti,0Cr25Ni20 and so on 4) Size: OD (6-530) x (1 ...