Tianjin Tianyingtai Steel Pipe Co., Ltd. is one of the most credible manufacturers and suppliers of seamless steel tube in China. Welcome to consult the quotation and import cheap seamless steel tube made in China here from our factory.
Product Features
✅ Seamless Structure - No weld seam, uniform structure, higher pressure-bearing capacity
✅ Wide Size Range - OD 1/2" to 26", full range of thicknesses to meet all project needs
✅ Multiple Standards - ASTM, API, DIN, EN, JIS, GB all available
✅ Strict Quality Control - 100% hydrostatic test, eddy current test, ultrasonic test
✅ Mill Test Certificate - EN 10204 3.1/3.2 MTC provided with every shipment
✅ Customization Service - Special sizes, grades, lengths, and surface treatments accepted
✅ Factory Direct Price - 20+ years manufacturer with competitive pricing
✅ Fast Delivery - Regular stock available, 15-30 days for custom orders
✅ Global Export - Exported to 80+ countries with rich shipping experience
I.Product Basic Info:
| Item | Specification |
|---|---|
| Product Name | Seamless Steel Tube / Seamless Steel Pipe |
| Standard | ASTM A106, A53, A192, A210, A333, A335, A519 / API 5L / DIN 17175 / EN 10210 / JIS G3441 / G3461 |
| Grade | Gr.A, Gr.B, Gr.C / Q235, Q345 / 20#, 45# / 16Mn / A53 Gr.B / A106 Gr.B / TP304, TP316L |
| Outer Diameter (OD) | 1/2" - 26" (21.3mm - 660mm) |
| Wall Thickness (WT) | Sch20, Sch40, Sch80, Sch120, Sch160 / 2mm - 60mm |
| Length | 6m / 12m / Customized (SRL, DRL, Fixed Length) |
| Manufacturing Process | Hot Rolled (Hot Finished) / Cold Drawn (Cold Rolled) |
| Section Shape | Round / Square / Rectangular |
| Surface Treatment | Black / Varnish / Oiled / Galvanized / 3LPE / FBE / Anti-corrosion coating |
| End Treatment | Plain End / Beveled End / Threaded / Coupling / Grooved |
| Certificate | ISO 9001, API 5L, CE, BV, SGS, Mill Test Certificate (EN 10204 3.1/3.2) |
| Brand | OEM/ODM Accepted |
Chemical Composition
| Grade | C (%) | Si (%) | Mn (%) | P (%) max | S (%) max | Cr (%) | Ni (%) |
|---|---|---|---|---|---|---|---|
| 20# | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | ≤0.25 | ≤0.30 |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | ≤0.25 | ≤0.30 |
| Q345B | ≤0.20 | ≤0.50 | 1.20-1.60 | 0.035 | 0.035 | ≤0.30 | ≤0.30 |
| A106 Gr.B | ≤0.30 | ≥0.10 | 0.29-1.06 | 0.035 | 0.035 | ≤0.40 | ≤0.40 |
| TP304 | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-11.0 |
| TP316L | ≤0.03 | ≤1.00 | ≤2.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 |
Application Fields
| Industry | Specific Use |
|---|---|
| Oil & Gas | Line pipe, casing, tubing for offshore and onshore drilling |
| Boiler & Heat Exchanger | High-pressure boiler tubes, superheater tubes |
| Petrochemical | Refinery piping, cracking furnace tubes |
| Construction | Structural support, scaffolding, bridge construction |
| Shipbuilding | Hull structure, marine piping systems |
| Automobile | Drive shaft, axle housing, shock absorber |
| Hydraulic System | Hydraulic cylinder barrel, precision honed tube |
| Machinery | Bearing sleeves, gear blanks, mechanical parts |
| Power Generation | Steam pipelines, turbine components |
| Furniture | Steel furniture frames, fitness equipment |
Tianjin TianYingTai(TYT) Steel Pipe Co., Ltd is located in Jinghai, Tianjin, which is professionally engaged in steel production sales, steel processing, greenhouse engineering with accessories and export business. It has been experienced for 15 years so far. We have 13 production lines for various kinds of steel pipe, 10 processing production lines and 2 environmental production hot-dipped galvanizing lines. We not only can produce 450,000 tons of various sizes of ERW steel pipe, but also can produce deep processing pipe with 100,000 tons. Our annual production capacity of hot dipped galvanized steel pipe is 200,000 tons, capacity of greenhouse engineering material is 250,000 tons and highway column and guardrail is 200,000 tons.
Quality Inspection:
1.Our factory has its own "experimental testing center".CNAS Laboratory Accreditation Certificate (the second private enterprise to obtain this certificate)
2.Control quality strictly.The first pass is the quality inspection on the production line,The second pass is full inspection of the production quality .
3.We have got internationally recognized certificates, ISO, CE, LR,Philippine certificate,also support third-party testing,as SGS, BV, ect.
Packing&Shipment:
1.we have fully enclosed, clean and tidy modern logistics storage center with a building area of 20,000 square meters. It can provide customers with storage, package, billing and delivery. We can loading 20-25 containers one day. The packing accuracy rate is 100%;
2.We own professional logistics shipment, around more than 10 13-meter semi-trailers, in terms of transport efficiency and quality to provide customers with convenience, cost reduction, value-added services;
3.In the aspects of preventing steel pipe bumping, scratching, cratering, flattening, pipe deformation, raining, etc., standardization operations have been established and strictly implemented to ensure that the quality of the process of storage and transportation of steel pipes is effectively controlled.
FAQ
Q1: Are you a manufacturer or trading company?
A: We are a direct manufacturer with 20+ years of production experience, located in Tianjin, China. Welcome to visit our factory.
Q2: Can you provide samples? Is it free?
A: Yes, we can provide free samples (small size), but the freight cost is on the buyer's side. Custom samples may charge a sample fee.
Q3: What's your MOQ?
A: MOQ is 5 tons for stock sizes, or 1 container for custom orders.
Q4: How long is your delivery time?
A: 7-15 days for stock sizes. 15-30 days for custom production. Special sizes need to be negotiated.
Q5: Do you support OEM/ODM?
A: Yes, we can produce under your brand name and customize specifications according to your requirements.
Q6: What payment terms do you accept?
A: T/T 30% deposit, 70% balance before shipment. L/C at sight also accepted for large orders.
Q7: How do you guarantee quality?
A: We provide MTC with every shipment. Third-party inspection (SGS/BV/TUV) is welcome. We also support sample confirmation before bulk production.
Q8: Can you arrange shipping?
A: Yes, we have long-term cooperation with reliable shipping agents. We can quote FOB, CFR, CIF, or DDP based on your needs.
Contact us today for the best factory price!⬇️
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