Details: supply of isi mark 175mm nominal bore,plain and steel casing pipe grade of steel fe 410 of wall thickness conforming to is 4270-2001 and latest ammendments, electrical resistance welded steel tubes, material and conforming to is 1387-1993 and manufactured by basic open hearth electric or basic oxygen process in random length of 5-7m both ends.threaded conforming to is 554-1985 one end fixed with socket conforming to is 4270-2001 and the other end with pipes all shall be responsibaly free from defects. the tubes shall be responsible straight end should be with isi marking weighing 25.10kg/m.prices include collar-medium duty, complete with all lead and lifts, loading and unloading charges as per the direction of engineer in charge.;providing and fixing ms casing collars as per is 1239 (part-ii) 1982 with all latest amendments if any for any dia. the thickness of plate used for covering one end shall be 3mm (minimum). the dimensions of caps and colars shall be strictly as per is 1239 (p