Features: 1) ERW steel pipe for low pressure service: a) Item: ERW steel pipe b) Standard: BS1387, ASTM A53, GB/T3091 c) Quality: Q235, Q195, Q215, Q345 d) Specifications: 1/2 - 12 e) Thickness: 0.7 - 10mm F) Length: 4 - 12m 2)Galvanized welded steel pipe: a) Item galvanized pipe b) Standard: BS1387, ASTM A53, GB/T3091 c) Specificatins: 1/2 - 8 d) OD (mm): 21.3 - 219 e) Thickness: 1.0 - 6.0m f) Length: 5 - 7m