We are specialized in manufacturing steel products and our main products are high-tech ERW pipes. The outer diameter is from φ114mm to φ340mm and wall thickness is from 4.0mm to 14mm. What's more, our production implements GB/T 9711.1, GB/T 9711.2, GB/T 3091-2001, GB/T 13793-92, API SPEC 5CT, API SPEC 5L, ASTM A53 Standards. If you have any interests in our products, please let us know your full enquiry.  Your detailed information is highly appreciated and will receive our prompt attention.