supply of set of safety protective clothing , set of safety protective clothing for welders as per is 6153:1971 consisting of : 1. light weig ht leather apron (jointed), size :1210x615x(1.5 to 2)mm ,qty :1 2. light weight leather leg guard, size : 445 x310x(1.2 to 1.5)mm ,qty :2 3. light weight leather arm guard, size : 490x210/145x(1.2 to 1.5)mm ,qty :2 all leather clothing shall be stitched with 25/3 ply linen thread or cotton sewing thread conforming to varie ty no. 38 of is : 1720-1969.all ends of seams shall be secured by lock stitching or by riveting. the threads shall be inherently fire-resistant or be so treated that it shall not smoulder back along the seam when ignit ed. the protective clothing shall be marked legibly and indelibly with the following: a) manufacturer%u201 9s name; b) trade-mark, if any; c) size, and d) date of manufacture. the material shall be individually wrap ped in polyethylene sheets or packed in covers. as per specn. is: 6153:1971 [ warranty period: 30 month s after the date of delivery ] ]