Is:10221=l!M~ 1 Indian Standard .! âi CODE OF PRACTICE FOR COATING AND WRAPPING OF UNDERGROUND MILD STEEL PIPELINES 1 ( Second Reprint MAY 1993 ) 1 UDC 621.644:669.141.24:620.197.6:006.76…
Is:10221=l!M~ 1 Indian Standard .! âi CODE OF PRACTICE FOR COATING AND WRAPPING OF UNDERGROUND MILD STEEL PIPELINES 1 ( Second Reprint MAY 1993 ) 1 UDC 621.644:669.141.24:620.197.6:006.76…