steel pipe erw black tube
ERW Black Steel Pipes, Black Steel Tubes Supplier/Dealer Metline Industries (Steel Pipes & Tube Division) is an ISO 9001:2008 Certified manufacturer and supplier of Black Steel Pipes/Tubes. We stock an extensive range of electric resistance welded (ERW) black steel pipes / tubes in a size range of 1/2 inch N.B. to 20 inch N.B. in the Light, Medium and Heavy classes, confirming to IS: 1239 (Part1) 2004, Equivalent to BS : 1387.