Listing ID #4943685
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Contact Supplierindian standards: specification is: 1239 (part-i) 1990 (light, medium & heavy series) black & galvanized, plain end screwed and socketed up to 100 mm nb all series, 125 & 150 mm nb. 2. . Indian standards: specification is: 3589-1991 erw steel tubes 150 mm to 400 mm nb.4.