| After-sales Service: | 20 Years |
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| Warranty: | 20 Year |
| Type: | Seamless |
| Technique: | Hot Rolled |
| Material: | Carbon Steel |
| Surface Treatment: | Black |
| Samples: |
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| Customization: |
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Audited Supplier 
Carbon Seamless Steel Pipe / Tube
| Seamless Pipe | China | GB/T8162/T8163 GB5310/6579/9948 |
| U.S.A. | ASTM A53/A106/A178/A179/A192/A210/A213/A333/A335/A283/A135/A214/315/A500/A501/A519/A161/A334; API 5L/5CT | |
| Japan | JIS G3452/G3454/G3456/G3457/G3458/G3460/3461/3462/3464 | |
| German | DIN 1626/17175/1629-4/2448/2391/17200 SEW680 | |
| Russia | GOST 8732/8731/3183 | |
| Material and Grade | China | 10#, 20#, 16Mn, 20G, 15MoG, 15CrMo, 30CrMo,42Crmo, 27SiMn, 20CrMo |
| U.S.A. | Gr. B/Gr.A/A179/A192/A-1/T11/T12/T22/P1/FP1/T5/4140/4130 | |
| Japan | STPG38,STB30,STS38,STB33,STB42,STS49,STBA23,STPA25,STPA23 | |
| German | ST33,ST37,ST35,ST35.8,ST45,ST52,15Mo3,13CrMo44, 1.0309, 1.0305, 1.0405 | |
| Russia | 10, 20, 35, 45, 20X | |
| Length | 5.8m 6m Fixed. 12m Fixed, 2-12m Random | |
| Place of Origin | China | |
| Outside Diameter | 1/2'-24 | |
| 21.3mm-609.6mm | ||
| Technique | 1/2.6': hot piercing processing technique | |
| 6'..24' hot extrusion processing technique | ||
| Usage /Application | Oil pipe line, Drill pipe, Hydraulic pipe. Gas pipe, Fluid pipe.Boiler pipe,Conduit pipe, Scaffolding pipe pharmaceutical and ship | |
| building etc. | ||
| Tolerance | ±0.2mm | |
| Processing Service | Bending Welding. Decoiling. Cutting. Punching | |
| Alloy Or Not | Is Alloy | |
| Delivery Time | 8-14 days | |
| Material | API5L, Gr.A&B, X42, X46, X52, X56, X60, X65, X70, X80, ASTM A53, A106,A135,A252,A500, DIN1626,ISO559, ISO3183.1/2, KS4602, | |
| GB/T911, 1/2, SY/T5037, SY/T5040, STP410, STP42 | ||
| Surface | Black Painted, Galvanized, Natural Anticorrosive 3PE coated, polvurethane foam Insulation | |
| Packing | Standard Sea-worthy Packing | |
Standard of carbon seamless steel pipe
| ASTM A53 Gr.B | Black and hot-dipped zinc-coated steel pipes welded and seamless |
| ASTM A106 Gr.B | Seamless carbon steel for high temperature service |
| ASTM SA179 | Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes |
| ASTM SA192 | Seamless carbon steel boiler tubes for high pressure |
| ASTM SA210 | Seamless Medium-carbon boiler and superheater tubes |
| ASTM A213 | Seamless alloy-steel boiler, superheater, and heat-exchanger tubes |
| ASTM A333 GR.6 | seamless and welded carbon and alloy steel pipe intended for use at low temperatures. |
| ASTM A335 P9,P11,T22,T91 | Seamless ferritic alloy-steel pipe for high-temperature service |
| ASTM A336 | Alloy steel forgings for pressure and high-temperature parts |
| ASTM SA519 4140/4130 | Seamless carbon for mechanical tubing |
| API Spec 5CT J55/K55/N80/L80/P110/K55 | Seamless steel pipe for casing |
| API Spec 5L PSL1/PSL2 Gr.b, X42/46/52/56/65/70 | Seamless steel pipe for line pipe |
| DIN 17175 | Seamless steel tube for elevated temperture |
| DN2391 | Cold drawn seamless prevision pipe |
| DIN 1629 | Seamless circular unalloyed steel tubes subject to special requirements |
Classfication of carbon seamless steel pipe
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Product name
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Material
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Standard
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Size(mm)
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Application
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16MnDG 10MnDG 09DG 09Mn2VDG 06Ni3MoDG ASTM A333 |
GB/T18984- 2003 ASTM A333 |
OD:8-1240* WT:1-200 |
Apply to - 45 ºC ~ 195 ºC low temperature pressure vessel and low temperature heat exchanger pipe
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High-pressure boiler tube
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20G ASTMA106B ASTMA210A ST45.8-III |
GB5310-1995 ASTM SA106 ASTM SA210 DIN17175-79 |
OD:8-1240* WT:1-200 |
Suitable for manufacturing high pressure boiler tube, header, steam pipe, etc
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Petroleum cracking tube
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10 20 |
GB9948-2006
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OD: 8-630* WT:1-60 |
Used in oil refinery furnace tube, heat exchanger tube
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Low medium pressure boiler tube
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10# 20# 16Mn,Q345 |
GB3087-2008
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OD:8-1240* WT:1-200 |
Suitable for manufacturing various structure of low and medium pressure boiler and locomotive boiler
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General structure of the tube |
10#,20#,45#,27SiMn ASTM A53A,B 16Mn,Q345 |
GB/T8162- 2008 GB/T17396- 1998 ASTM A53 |
OD:8-1240* WT:1-200 |
Apply to the general structure, engineering support, mechanical processing, etc
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Oil casing
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J55,K55,N80,L80 C90,C95,P110 |
API SPEC 5CT ISO11960 |
OD:60-508* WT:4.24-16.13 |
Used for extraction of oil or gas in oil Wells casing, used in oil and gas well sidewall
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Tolerances of carbon seamless steel pipe
| Pipe types | Pipe sizes(mm) | Tolerances |
| Hot rolled | OD<50 | ±0.50mm |
| OD≥50 | ±1% | |
| WT<4 | ±12.5% | |
| WT 4~20 | +15%, -12.5% | |
| WT>20 | ±12.5% | |
| Cold drawn | OD 6~10 | ±0.20mm |
| OD 10~30 | ±0.40mm | |
| OD 30~50 | ±0.45 | |
| OD>50 | ±1% | |
| WT≤1 | ±0.15mm | |
| WT 1~3 | +15%, -10% | |
| WT >3 | +12.5%, -10% |
The mechanical engineering workshops of our factory are all equipped with numerical central control ,Our factory has been constantly improving the platform construction, improving the quality of technical team,strengthening the invention of products category, formed complete R & D system and production quality management system, wined high reputation in the iron and steel industry.
Our company is a collection of R & D, production, management as one of the group company, the company and subsidiaries mainly produce carbon steel series, stainless steel series, galvanized series, aluminum series and PPGI, PPGL series and other products of modern enterprises. The company covers an area of 36,000 square meters and employs more than 500 people. The leading products are seamless steel pipe, carbon steel bar, color coated plate and aluminum foil, which are famous brand products in Shandong Province. Hanbang Brand is a well-known brand in China. The company won the seventh Mayor Quality Award. It is the single champion enterprise in Shandong Province, the quality benchmark enterprise in Shandong Province, the national contract-abiding and credit-keeping enterprise, and the national "Architectural Decoration color Steel Plate" and other 16 national, industrial and group standards. Prepare the units. Products are exported to Russia, Canada, Australia, Africa, South America, Southeast Asia and other more than 40 countries and regions.
Packing&Shipping
1. wood pallet packing cover with water-proof paper
2. steel pallet packing cover with water-proof paper
3. wood box packing
4. steel pallet packing cover with steel box
5. in bundles with steel strip no extra packing
6. packaged as customers' requirments.
1. Q: Are you a manufacturer?
A:Yes, we are manufacturers. We have our own factory and our own company. I believe we will be the
most suitable supplier for you.
2. Q: Can we visit your factory?
A: Sure, we welcome you to visit our factory , check our production lines and know more about our strength and quality.
3. Q: Do you have quality control system?
A: Yes, we have ISO, BV, MTC, certifications and our own quality control laboratory.Third party testing services are also available
4. Q: Can you arrange the shipment for us?
A: Yes, we have designated sea freight and railway freight forwarders with decades of experiences and we get the best price with earlist vessel and professional service.
5. Q: How long is your delivery time?
A: Generally it is 7days if we have the exact goods in our stock. If not, it will take around 15-20 days to get goods ready for delivery.
6. Q: Can I get some samples?
A: We are glad to provide free samples to you, but we do not offer the freight.
7. Q: What is your after-sale service?
A: We provide after-sale service and offer 100% guarantee on our products.
8. Q: What is your MOQ?
A: 2 Ton
Suppliers with verified business licenses
Audited Supplier 
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