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STEEL PIPES Steel Pipes SMLS/ERW/SAW Material Specification API 5L Grade B ASTM A53 Grade B ASTM A106 Grade B ASTM A333 Grade 6(low temperature) ASTM A335 P5/P11/P22(high temperature) Wall Thickness SCH.40-SCH.160 Galvanized Steel Pipes Material Specification TIS 276/277-2532 Type2/Type4 BS 1387 – 1985 BS-L/BS-M/BS-H Stainless Steel Pipes SMLS/Welded Material Specification ASTM TP304/304L/316/316L Wall Thickness SCH.10-SCH.160