Standard Our strong commitment to maintain the highest quality standard products has earned us the supporting from BOI Promotion Privilege, the attainment of ISO 9001:2000 Certificate as well as receiving the permission to display Thailand Industrial Standard (TIS) seal on all our products. Moreover we can produce pipes with the international standard such as JIS G 3444 (STK 400), JIS G 3452, JIS G 3466 (STKR 400), ASTM A 53 (120) Grade A or B, ASTM A 53 - 87b, ASTM A 500: 1995, DIN 2440/2441, AWWA C 200, JIS G 3457, BS 534, BS 1387: 1985 (Class: L,M,H). In order to the high quality of machine, the high grade steel pipe that have high tensile strength and yield strength can be produce with TIS 107 type HS 50 and HS 51 for the high standard usage.       Thai Industrial Standard TIS 427-2531 TIS 276-2532 TIS 107-2533 HS 41, 50, 51 International Standard JIS G 3444 (STK 400) JIS G 3452 JIS G 3466 (STKR 400) ASTM A 53 (120) Grade A or B ASTM A 53 - 87b ASTM A 500: 1995 DIN 2440/2441 AWWA C 200 JIS G 3457 BS 534 BS 1387: 1985 (Class: L,M,H)       Copyright 2006 © All rights reserved by MitrSteel Co.,Ltd.