1. Longitudinally seam submerged arc welded steel pipe with the high quality
2. Size: OD200-800mm,7.87inch-31.5inch ( single weld seam ), OD800-3000
Company:Qingdao Linhui Steel Structure Co. Ltd.
2. Size: OD200-800mm,7.87inch-31.5inch ( single weld seam ), OD800-3000
Company:Qingdao Linhui Steel Structure Co. Ltd.
