Product Description Size O.D.: 20x20-400x600mm W.T.: 1.2-11.75mm Length: 3.0-12m Standard ASTM A500, BS1387,GB3091,ASTMA53, B36.10, BS EN1029, GB/T9711 etc Material SS400; S235jrh; ASTM A53 GrA,GrB; STKM11,ST37,ST52, 16Mn,etc. Fabrication Plain ends, cutting, etc Surface Treatment 1. PVC,black and color painting 2. Transparent oil,anti-rust oil 3. According to clients requirement Package Bundle;Bulk;Plastic bags ,etc Others We can do special orders as customer's requirement. We also can provide all kinds of steel hollow pipes. All the production process are made under the ISO9001:2008 strictly     Elements     Material    Chemical Composition% Mechanical Property C% Mn% S% P% Si% Yield Point (Mpa) Tensile Strength(Mpa) Elongation   (%)  Q195 0.06-0.12 0.25-0.50 <0.050 <0.045 <0.30 >195 315-430 32-33 Q215 0.09-0.15 0.25-0.55 <0.05 <0.045 <0.30 >215 335-450 26-31 Q235 0.12-0.20 0.30-0.70 <0.045 <0.045 <0.30 >235 375-500 24-26 Q345 <0.20 1.0-1.6 <0.040 <0.040 <0.55 >345 470-630 21-22 Related products Production process Company Information Tianjin Reliance Company , is specialized in manufacturing steel pipes. and many special service can be done for you. such as ends treatment, surface finished, with fittings, loading all kinds of sizes' goods in container together, and so on for Our office is located in Nankai distric, Tianjin city, near Beijing, the capital of China, and with excellent location.It just takes 2 hours from beijing international airport to our company by high speed rail.and the goods can be delivered from our factory to Tianjin port for 2 hours. you can take 40 minutes from our office to Tianjin beihai international airport by subway. Export record: India,Pakistan,Tajikistan,Thailand,Myanmar,Australia,Canada,United States,United Kingdom,Kuwait,Mauritius,Morocco,Paraguay,Ghana,Fiji,Oman,Czech Republic,Kuwait,Korea and so on. Packaging & Shipping Our Services: 1. We will provide you with detailed technical data and drawing. 2. Strict quality control and careful supervision to ensure the best crane for you. 3. Strict process control to make sure the crane will be delivered on time. 4. We will help handling shipment documents. 5. Our senior engineers can provide installation guidance, commissioning and training services. 6. Delivery with English user manual, parts manual, product certification and revelant certificates. 7. 12 months warranty after installation and commissioning in additional to human damage factor. 8. Technical advisory for any time and engineers available to service machinery overseas.