Tianjin Huilitong Steel Tube Co., Ltd. mainly produces ERW high-frequency straight seam steel pipes and SSAW double-sided submerged arc spiral steel pipes. They can follow industry standards like API 5L, API 5CT, GB/T9711, GB/T3091, EN10210, EN10219, EN10217, and so on. Their products are widely used in oil and gas transportation, water supply and fluid transport, sewage treatment, bridge construction, port and dock projects, industrial piles, and various steel structure constructions.