Basic Info.
Surface Treatment
Varnishing
Usage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
Length
as Customer′s Requirement
Seamless Thickness
as Customer′s Requirement
Width
as Customer′s Requirement
Transport Package
Neutral Standard Export Seaworthy Packing
Specification
As customer′s requirement
Product Description
Product Description
Seamless steel tubes for gas cylinders are seamless steel tubes suitable for manufacturing gas cylinders and accumulator shells.
| Pipe Types | Diameter(D) | Wall thickness(S) |
| Outer diameter of steel pipe(mm) | Permissible deviation(mm) | Wall thickness of steel pipe(mm) | Permissible deviation(mm) |
| Hot Rolled Pipe | φ559 | ±1.0% | 17 | -0%,+25 |
| Standard | Grade | Chemical Components(%) |
| C | Si | Mn | P | S | Cr | Ni | Cu | Mo | V |
| Q/321088HGB3 | 4130X | 0.25~0.35 | 0.15~0.35 | 0.40~0.90 | ≤0.020 | ≤0.010 | 0.80~1.10 | ≤0.25 | ≤0.20 | 0.15~0.25 | ≤0.08 |
| GB/T 18248 | 37Mn | 0.34~0.38 | 0.10~0.35 | 1.35~1.75 | ≤0.020 | ≤0.010 | ≤0.30 | ≤0.30 | ≤0.20 | - | - |
| 30CrMo | 0.26~0.33 | 0.17~0.37 | 0.40~0.70 | ≤0.020 | ≤0.010 | 0.80~1.10 | ≤0.30 | ≤0.20 | 0.15~0.25 | - |
| 35CrMo | 0.32~0.40 | 0.17~0.37 | 0.40~0.70 | ≤0.020 | ≤0.010 | 0.80~1.10 | ≤0.30 | ≤0.20 | 0.15~0.25 | - |
| JIS G 3429 | STH11 | ≤0.50 | 0.10~0.35 | ≤1.80 | ≤0.035 | ≤0.035 | - | - | - | - | - |
| STH12 | 0.30~0.41 | 0.10~0.35 | 1.35~1.75 | ≤0.030 | ≤0.030 | - | - | - | - | - |
| STH21 | 0.25~0.35 | 0.15~0.35 | 0.40~0.90 | ≤0.030 | ≤0.030 | 0.80~1.20 | ≤0.25 | - | - | - |
| STH22 | 0.33~0.38 | 0.15~0.35 | 0.40~0.90 | ≤0.030 | ≤0.030 | 0.80~1.20 | ≤0.25 | - | - | - |
| Standard | Grade | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) |
| Q/321088HGB3 | 4130X | 725~865 | 485~735 | ≥20 |
| GB/T 18248 | 37Mn | ≥750 | ≥630 | ≥16 |
| 30CrMo | ≥930 | ≥785 | ≥12 |
| 35CrMo | ≥985 | ≥835 | ≥12 |
| JIS G 3429 | STH11 | ≥750 | ≥630 | ≥16 |
| STH12 | ≥750 | ≥630 | ≥16 |
| STH21 | ≥480 | ≥320 | ≥22 |
| STH22 | ≥410 | ≥275 | ≥20 |
Detailed Photos
Certifications
Packaging & Shipping
Packing Details:
1.Export sea worthy package + water proof paper
2.Safe loading and fixing Professional teams
Delivery Detail: within 7-10 working days after receiving the deposit or according to your order quantity.
1.Plastic Woven Bag Packaging
2.Wooden Case packingCompany Profile
Wuxi Tongno Special Steel Co., Ltd. was founded in 2013, the registered capital of 5 million yuan, for the professional production of seamless steel pipe manufacturing enterprises; after years of rapid development, Wuxi Tongno Special Steel Co., Ltd. now has three types of seamless steel pipe production line;The first type is hot rolling production line, for 114ASSEL mill, mainly produces hot rolled seamless carbon steel pipe and alloy steel pipe with outer diameter range of 60-159, with an annual production capacity of 100,000 tonnes, and the main equipment is ring heating furnace, two-roll piercing machine, ten-stand reducing machine, ASSEL three-roll rolling mill, stepping re-heating furnace, seven and twelve-stand three-roll sizing machine, on-line quenching equipment, stepping cold bed, High-precision two-roll straightening machine, high-efficiency pipe cutting machine, non-destructive testing equipment, etc.The second type is hot expanding production line, which mainly produces seamless carbon steel tubes and alloy steel tubes with the range of OD 168-920, with an annual production capacity of 30,000 tonnes, and the main production equipments are 4 sets of medium-frequency hydraulic two-step expanding units, 1 set of box-type heat-treatment furnace, 1 set of Φ920 non-destructive testing unit (ET, UT, thickness measurement), 1 set of Φ920 hydrostatic testing unit, 1 set of pressure straightening machine, 1 set of Φ920 external shot blasting unit, 1 set of internal and external grinding and polishing machines, and 1 set of Φ920 external and external grinding and polishing machines, and so on. There are 7 sets of internal and external grinding and polishing machines, which have gradually established the production advantages of hot enlarged calibre carbon steel pipes, alloy steel pipes, boiler pipes, low temperature pipes, stainless steel pipes, duplex stainless steel pipes, titanium and titanium alloy pipes, nickel-based alloy pipes and so on.The third type is cold rolling production line, mainly produces 10mm ~ 76mm outside diameter, wall thickness 2 ~ 20mm, length ≤ 18m, all kinds of carbon steel, alloy steel, non-ferrous metals, precision steel tubes, the products are used for pneumatic and hydraulic components, petroleum pumping, engineering machinery, petrochemical power station boiler equipment, annual output of 4000 tonnes, the main production equipment for the cold rolling mill 2 sets, 6-roll automatic straightening machine 1 set, the internal blast machine 1 set, 1 heat treatment furnace, the heat treatment furnace 1 set The main production equipments are 2 sets of cold rolling mills, 1 set of 6-roll automatic straightening machine, 1 set of internal shot blasting machine, 1 set of heat treatment furnace and 2 sets of sawing machine.The company produces the main product standards and materials are: GB/T8163, GB5310, GB6479, GB9948 in the 10 #, 20 #, 16Mn, 15CrMo, 1Cr5Mo, 1Cr9Mo, 12Cr1MOV, 12Cr2Mo, 10Cr9Mo1VNbN, APT5LPSL1, PSL2, B-X80 API5CTJ55,K55,N80Q,L80-1,ASTM/ASMEA/SA106B,C,A335 P11,P12,P22,P5,P9,P91,A333Gr1,Gr.6,Gr.3,all kinds of gas cylinder steel pipe 34CrMo4,30CrMo,35CrMo,drill pipe,drill pipe weighting,drill collar pipe body Material 26CrMo a 42CrMo, 40Mn2, E75, X95, G105, S135, A519 1340, 4145H, 4137, etc., the products can be widely used in mechanical structure, electric power, petroleum, chemical industry, automobile, construction and other fields.Wuxi Tongno Special Steel Co., Ltd. has been adhering to the 'quality first, customer first' business philosophy, to ensure that the products of high-precision, wide range of wall thicknesses, small quantities of many varieties, fast-paced characteristics of the production, sales in the domestic advanced level, especially in the small-diameter medium-thick-walled and large-calibre thin-walled alloy seamless steel pipe production at the domestic advanced level. Level. Products at home and abroad enjoy a reputation for a variety of project construction, play their own characteristics of manufacturing energy.Our Advantages
1. Exceptional Service: We guarantee a response to all inquiries within 12 hours.
2. Certifications: Proudly holding ISO 9001, CE, and SGS certifications.
3. Cost - Effective Quality: Benefit from competitive prices and top - notch quality, as our products are directly sourced from our own factory.
4. Robust Production Capacity: With a monthly output of 20,000 tons, we ensure seamless production.
5. Flexible Payment Terms: We accept various payment methods, including T/T and L/C.
6. Swift Delivery & Standard Export Packaging: Expect quick delivery and products packaged in line with international export standards.
7. Factory - Direct Advantage: Our own factory enables us to offer competitive prices without compromising on quality.
8. Third - Party Testing: We welcome any third - party testing to verify the quality of our products.
9. Expert Team Support: Backed by a professional sales team and a reliable factory.
10.Dedicated to Customization: Your individual specifications are not just accepted-they're the cornerstone of our service. We're committed to delivering on every customized request.
Address:
1-1910 Fengbin Road, Liangxi District, Wuxi City
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Chemicals, Construction & Decoration, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Tools & Hardware
Management System Certification:
ISO 9001, ISO 9000, ISO 14001, ISO 14000, ISO 20000, OHSAS/ OHSMS 18001, IATF16949, HSE, ISO 14064, QC 080000, GMP, BSCI, BRC, SA 8000, QHSE, HACCP, BS 25999-2, ISO 13485, EICC, ANSI/ESD, SEDEX, ISO 22000, AIB, WRAP, GAP, ASME, ISO 29001, BREEAM, HQE, SHE Audits, IFS, QSR, ISO 50001, LEED, PAS 28000, FSC, ISO 10012, ISO 17025
Company Introduction:
Deruisi Co., Limited. Was established in 2011 and is located in Jiangsu Province which is China′s largest stainless steel production base, specializes in manufacturing and selling stainless steel products. The main products are stainless steel sheets/ plates, stainless steel coils, stainless steel pipes/ tubes and stainless steel bars which are widely used in chemical, construction, food, medicine, energy and some other fields.
The materials are AISI/ASTM 201, 202, 304, 304L, 309S, 310S, 316, 316L, 321, 410, 430, 430A, 904L, 2205, etc. And the surface treatments are BA, 2B, 8K, 6K, HL, No. 1, No. 4, etc. In our sales network, the market share of foreign trade is 80% and we export to worldwide.
For have been operating and doing foreign trade for about ten years, our company always pursues challenge and insists on serving our clients with our best quality, reasonable price and delicate service. Having won the recognition and support of our domestic and foreign clients′, we devote to being the biggest supplier of stainless steel products in Wuxi, China.
Our company always consider quality as the core of market competition after foundation, and because of the successful positioning and strong sense of quality from all our staff, Deruisi Co., Ltd can be one of the best stainless steel suppliers in the world.
Such as the slitting of the stainless steel coil is to cut the stainless steel coil into a corresponding width for further deep processing and pipe making. The process of slitting should pay attention to the scraping of the slitting knife to the coil, the width and error of the strip, In addition, the striping is related to the pipe making process, and the striped cloak and burr are essential for the pipe making process.
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