Flensa Leher Las / Flensa WN
Welding Neck Flange / WN Flensa sesuai DIN 2527
Welding Neck Flange / WN Flensa sesuai MSS SP44
Welding Neck Flange / WN Flange sesuai JIS B2220
Welding Neck Flange / WN Flange sesuai BS EN1092
Rahasia pribadi