Chinese Square ERW Thin Wall Steel Pipe Manufacturer The pipe diameter and wall thickness ratio of less than 20 is called thick-walled steel pipe, which is mainly used in petroleum geology drilling pipe, petrochemical used cracking tubes, boiler tubes, pipes and automotive bearings, tractors, aviation structures with high precision tubes. Thick-walled steel pipes are mainly used for water supply projects, petrochemicals, chemical industry, power industry, agricultural irrigation, urban construction and so on. For liquid delivery: water supply, drainage. For gas transportation: gas, steam, liquefied petroleum gas. Structural uses: Used for piling, bridges, docks, roads, buildings and other structures. Metal tubing is made of metallic elements or alloys and is used for a variety of functions including fluid or gas flow, wiring, structural applications, and even medical uses. Metal tubes are also commonly used as raw materials for industry. Metal tubing comes in various widths and lengths, and it can be round, oval, square, rectangular, or triangular. Features: 1. Outer diameter: 9.5--305mm zinc: 60-300g/square meter export time: since 2006 2. Wall thickness: 0.8-12.0mm Length: 4-9m 3. Spec.: Q195, Q215, Q235, Q345 4. Standards: ASTM-A53A, BS1387-1985, GB/T3091-2001 5. Steel pipe: A) GTC(galvanized threaded and coupling) steel pipe: DN15-DN200 (NB1/2''-NB8'') B) GPE(galvanized plain end)steel pipe: DN15-DN200 C) Grooved steel pipe: DN15-DN200 (NB 1/2''-NB8'') D) Used for low pressure liquid delivery such as water, gas and oil E) The product apply to various anticorrosive pipes 6. Packing: In bundles 7. M.O.Q.: 10 tons for each spec. 8. Leading time: In 20 days. 9. Payment term: T/T advanced, L/C at sight. Looking forward to your kind inquiry! FAQ 1)How manys days can you delivery after confriming order ?Normally 15-30 days after get deposits or according to quantity 2)What is the product's warranty ? As long as you received our cargo within 1 years, you have any problem ,pls feedback to us .After cnofirming our quality cause ,we will resend new pipes or give reasonable compensation for you. 3) Can I have a trail order ? Of course ,we are gald to make a trail order to show our quality and service . Getting your satification ,we can try more cooperation . 4) Can I have a vist ?   Welcome your visiting ,we can communicate and exchange market information to develop more business.