M/s STI SANOH India Ltd is Joint venture of Sanoh Industrial Corporation of Japan and Steel Tubes of India Ltd, India.We manufacture two types of steel tubes-1. Double wall copper coated copper brazed steel tubes in sizes 4.76*.71, 6.35*.71, 7.94*.71, 9.53*.71 and 10*.71. Other sizes in between 4.76mm to 10mm can also be manufactured basis of order. We are providing zinc coated tubes and olive green coated tubes also over copperised surface.2. Single wall copper coated electric resistance welded tubes in sizes 4.76*.71, 6.35*.71, 7.94*.71.We are providing zinc coated tubes and olive green coated tubes also over copperised surface.We have in-house facility to produce all above quantities and production capability of 3million meters.