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Basic Info.
Product Description
Hot rolled seamless steel pipe deformation process can be summarized as three stages: extension, perforation and finishing. Hot rolled seamless steel pipes is relative to the cold-rolled, cold rolling is below the recrystallization temperature of the rolling and hot rolled is carried out at above the recrystallization temperature of the rolling. Hot rolled seamless steel pipe can damage the refinement of the crystal grains of the steel, cast microstructure of the steel ingot and eliminate the defects of the microstructure so that the the steel organization compacting, improves the mechanical properties. This improvement is reflected in the rolling direction so that the steel is no longer at a certain extent isotropic; pouring the formation of bubbles, cracks and osteoporosis, under high pressure and temperature can also be welded together.Hot Rolled Steel Pipes (Seamless Tube) in different size, specifications, grades & thickness as per the client's requirements. The range offered by tubes is available as per the international & national standard and can be available from us at affordable prices. These pipes are used in various application industry like shipbuilding, power plants, oil and gas, automotive, sugar mills and distilleries, cement and construction industries etc.
| Standard | API, ASTM, BS, DIN, GB, JIS |
| Outer Diameter: | 21.3mm-660mm |
| Wall Thickness | 0.5mm-20mm |
| Dia Tolerance | Control with in the standard, OD:+-1%, WT:+-10% |
| Materials | 10#, 20#, 45#, Q235, Q345, Q195, Q215, ASTM A53/A106/A178/A333/A335, ST37, ST37-2, DIN 1629 ST35, ST45, DIN 17175 ST35.8, DIN 17175 19Mn5, 16Mn, Q345B, T1, T2, T5, T9, T11, T12, T22, T91, T92, P1, P2, P5, P9, P11,P12, P22, P91, P92, 15CrMO, Cr5Mo, 10CrMo910, 12CrMo, 13CrMo44, 30CrMo, GR.1, GR.3, GR.6, GR.7, Gr.B, X42, X46, X52, X60, X65, X70, X80, X100 |
| Zinc coating | Pre galvanized steel pipe: 60-150g/m² Hot dipped galvanized steel pipe: 200-400g/m² |
| Inspection | ISO, BV, SGS, MTC |
| Packing | Steel strip packed. Standard Export Seaworthy Package.Suit forall kinds of transport,or as required |
| Application | Widely used in Structure, Accessorize, Construction, Fluid transportation,machinery parts,the stress parts of the automobile tractor parts and so on |
| MOQ | 5metric ton,sample order accepted |
| Shipment time | Within 7-10 workdays after receiving deposit or L/C |
Below is our product catalog of steel pipe
| Descriptions | Grades | Standard | Specification (OD*WT)mm | Usage |
| Structural steel pipe | 20# 35# 45# Q345B, 16Mn, Q345B-E, 20Mn2, 25Mn, 30Mn2, 40Mn2, 45Mn2, SAE1018, SAE1020, SAE1518, SAE1045. | GB/T8162-2008 | 6-1020*1.5-100 | For commom structure |
| Fluid steel pipe | 10#, 20#, ASTM A106, A210, A53, 16Mn, Q345A.B.C.D.E, Q295B.C.D.E | GB/T8163-2008 | 8-630*1.0-40 | Fluid feeding |
| High pressure boiler pipe | 20G, 15MnG, 20MnG, 15CrMoG, 12Cr1MoVG, St35.8, St45, SA106b, SA106c, SA210a, SA210c, A335P2, P11, P12, P22, P91, P92, A213 T2,T9, T11, T12, T22, T23, T91 | GB/5310-2008, ASTM A 106-99, DIN 17175-79 | 14-630*2-80 | Temperature-resistant seamless steel pipe far high-pressure boiler |
| Oil casing pipe | API SPEC 5CT J55, K55, N80, L80, C90, C95, P110 | API SPEC 5CT, SY/T6194-96, GB/T222-84, | 10-530*1.5-36 | Boiler pipes for refinery,heatexchangeing pipes,seamless steel pipes for pipeline |
| Pipeline | API SPEC 5L, X42, X52, X60, X65,X70,X80 ASTM A53, ASTM A106, ASTM A333, BS301, BS3602, BS3603, BS3604, PSL1, PSL2, DNV-OS-F101, CSA-Z245 | API SPEC 5L, ISO 3183, GB/T 9711 | 60-630*1.5-40 | Carrying gas,water or oil in the industries of petroleum and natural gas |
| Alloy steel pipe | 4140, 42CrMo, 32CrMo, 15CrMo, Cr5Mo, 13CrMo44, 12Cr1MoV P22 T91,P91,P9, T9, Wb36 | GB5310-95, GB9948-88, ASTM A335/A335M, ASTM A213/213M, DIN17175-79, JISG3467-88, JISG3458-88 | 16-824*2-100 | The seamless steel pipes features resistance to high presure,high/low temperature and corrosion ano is used in the industries of petroleum, chemical engineering and. Electric pwer as well as boiler |
| Hydraulic prop pipe | 20#, 45#, 27SiMn, 30CrMoSiA | GB/T17396-2009 | 70-377*9-40 | Coal mine hydraulic support and pillar cylinder, column, can also be used for other hydraulic cylinder, column |
ASTM A106 Seamless steel pipe
| Standard | Trademark | Chemical components | Mechanical property | ||||||||||
| C | Si | Mn | P,S | Cu | Ni | Mo | Cr | V | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | ||
| ASTM A106 | B | ≤0.30 | ≥0.10 | 0.29~1.06 | ≤0.035 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 | ≥415 | ≥240 | ≥30 |
| C | ≤0.35 | ≥0.10 | 0.29~1.06 | ≤0.035 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 | ≥485 | ≥275 | ≥30 | |
Chemical Composition of seamless steel pipe
| Grade | Chemical composition (%) | |||||
| C | Mn | Si | P | S | Al | |
| Q235A | 0.14~0.22 | 0.30~0.65 | ≤0.30 | ≤0.045 | ≤0.050 | |
| Q235B | 0.12~0.20 | 0.30~0.67 | ≤0.30 | ≤0.045 | ≤0.045 | |
| Q235C | ≤0.18 | 0.35~0.80 | ≤0.30 | ≤0.040 | ≤0.040 | |
| Q235D | ≤0.17 | 0.35~0.80 | ≤0.35 | ≤0.035 | ≤0.040 | |
| Q345A | ≤0.20 | ≤1.70 | ≤0.50 | ≤0.035 | ≤0.035 | |
| Q345B | ≤0.20 | ≤1.70 | ≤0.50 | ≤0.035 | ≤0.035 | |
| Q345C | ≤0.20 | ≤1.70 | ≤0.50 | ≤0.030 | ≤0.030 | ≥0.015 |
| Q345D | ≤0.18 | ≤1.70 | ≤0.50 | ≤0.030 | ≤0.025 | ≥0.015 |
| Q345E | ≤0.18 | ≤1.70 | ≤0.50 | ≤0.025 | ≤0.020 | ≥0.015 |
| Material | Chemical composition (%) | ||||||
| C | Mn | P | S | Si | Ni | Cu | |
| 1020 | 0.17~0.23 | 0.35~0.65 | ≤0.035 | ≤0.035 | 0.17~0.37 | ≤0.3 | ≤0.25 |
| 1045 | 0.42~0.5 | 0.5~0.8 | ≤0.04 | ≤0.045 | 0.17~0.37 | ≤0.25 | ≤0.25 |
| 1010 | 0.08-0.13 | 0.30-0.60 | ≤0.040 | ≤0.050 | - | - | ≤0.20 |
| 1035 | 0.32-0.38 | 0.50-0.80 | ≤0.040 | ≤0.050 | - | - | ≤0.20 |
Mechanical Properties of seamless steel pipe
| Steel material | Tensile Strength Mpa | Yield strength Mpa | Elongation % | Hardness | Straightness |
| 1020 | ≥510 | ≥245 | ≥25 | ≤156HB | 0.3~1.0 |
| 1045 | ≥647 | ≥355 | ≥16 | ≤HRC62 | 0.3~1.0 |
| 1010 | ≥410 | ≥245 | ≥25 | ≤156HB | 0.3~1.0 |
| 1035 | ≥530 | ≥315 | ≥20 | ≤156HB | 0.3~1.0 |
We provide one-stop trading services, including: design, quotation, inspection,packaging, delivery and installation to meet customer needs. We have many excellent experienced personnel. Our technical team combines advanced technology to provide sketch design and efficient project solutions. Our international sales staff can use professional knowledge to solve your problems. Our customers will always be respected because we meet all aspects of your personal needs.The company has always insisted on striving for survival by quality,continuously innovating in management and technology,and has established a sound scientific management and quality assurance system.
After 10 years of development and customer support, our carbon steel production capacity is from 500 tons/month to 10000 tons/month. Currently, we have 6 carbon steel production lines. Our professional engineers and well-trained workshop workers help our sales team complete every order ahead of schedule.
We offer different modes of transport depending on the customer's destination: rail transport and ship transport,etc.The Shipping Mark shall consist of: Trade mark, Seller's name, Product name, Applicable standards,Specifications, Package No., Contract No., Heat No., Production date, Weighing method, Net weight, Gross Weight, Consignee and Protection symbols, etc. 
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
Q7:Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties' inspections are all available such SGS, BV ect.
Q9:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q10: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.
Q11:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q12:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
Q13:How to pack the products?
A: Standard export sea-worthy packaging, the inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion and various climate changes during ocean transportation.
Q14:What is your working time?
A:In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry in the coming working day.