Our factory supplies diversified steel tube pipe series, covering carbon‑based and stainless‑steel hollow pipes, including carbon steel tube, galvanized steel tube and multiple specifications of stainless steel tube. For stainless‑steel materials, we provide mainstream grades: 304 stainless steel tube, 316 stainless steel tube, 316l stainless steel tube, premium‑grade seamless stainless steel tube and medical‑grade stainless steel tube medical. We own rich shape options: round seamless steel pipe, u steel tube, square steel tube, and the hot‑selling specification 20x20x0.7 square steel tube. Our scaffolding steel tube is specially engineered for building construction. Custom‑function tubing is also available, such as the evacuated tube solar collector for solar‑energy equipment. All seamless‑type products adopt integrated forming craft for seamless steel pipe, meeting industrial, medical, construction, solar‑energy and plumbing transmission demands.
Key Features:
Rich material choices We support carbon‑series (carbon steel tube, hot‑dip galvanized steel tube) and stainless‑steel grades (304 stainless steel tube, 316 stainless steel tube, 316l stainless steel tube). The versatile stainless steel tube delivers outstanding anti‑rust and acid‑resistant performance, and the dedicated‑type stainless steel tube medical satisfies strict sanitary standards for pharmaceutical equipment.
Premium seamless processing performance Our seamless stainless steel tube and seamless steel pipe are integrally pierced and moulded with zero welding seams. The compact inner‑wall structure resists high‑pressure impact, suited for fluid delivery, high‑temperature and corrosive working environments.
Complete shape & size specifications The steel tube pipe collection covers round, U‑shaped, square profiles. The square steel tube includes the mature size 20x20x0.7 square steel tube. Heavy‑duty scaffolding steel tube has strong bearing capacity for building projects, while the professional evacuated tube solar collector is optimized for solar heating systems.
Wide‑range application scenarios Products are widely used in construction scaffolding, medical machinery, solar‑energy facilities, chemical pipelines, structural frames, water‑supply piping and industrial machinery manufacturing. We support customized size, surface treatment and bulk‑order production.
Application Scenarios:
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose.
Why Choose Us?
1.Factory Direct Manufacturer
Professional seamless steel tube factory direct sales, no intermediate dealers, effectively control purchasing costs.
2. Complete range of sizes; custom cuts available
Support customized outer diameter, wall thickness and length. Comply with mainstream international standards including ASTM, DIN, EN, GB. Various materials optional: carbon steel, alloy steel, 304/316 stainless steel.
3.Flexible Negotiable Price
Cost-effective quotation. Unit price negotiable based on order quantity, customized requirements and material grade.
4.No welding seam on the tube body, outstanding pressure resistance and compression resistance, not easy to crack under high-pressure fluid delivery.
Choose us! (1)Custom designs available. ODM and OEM are welcome. (2)We hope to maintain long-term cooperation with every customer, we attach importance to quality and insist on providing high-quality products and services.
Factory Profile:
Production Equipment:
Product Testing:
Product Packaging:
Certifications:
Company Activity & Exhibition:
FAQ:
Q1: How do you guarantee the quality of your product?
A1: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
Q2: Delivery time?
A2: We have ready stock for most of material grades in our warehouse. If the material don’t have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q3: Can you provide a sample for our testing before confirm the order?
A3: Yes. We can provide sample to you for approval before you place an order to us. Free sample is available if we have stock.
Q4: Can we visit your company and factory?
A4: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.
Specification
JIS SKD11 Chemical composition:
C
Si
Mn
P
S
Cr
Mo
V
1.40-1.60
Max 0.40
Max 0.60
Max 0.030
Max 0.030
11.0-13.0
0.80-1.20
0.20-0.50
JIS SKD11 Mechanical Properties:
Yield Rp0.2 (MPa)
Tensile Rm (MPa)
Impact KV/Ku (J)
Elongation A (%)
Reduction in cross section on fracture Z (%)
As-Heat-Treated Condition
Brinell hardness (HBW)
968 (≥)
743 (≥)
44
24
44
Solution and Aging, Annealing, Ausaging, Q+T,etc
232
JIS SKD11Physical Properties:
Temperature (°C)
Modulus of elasticity (GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and
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