We supply high quality hot rolled seamless steel pipe made of carbon steel and alloy steel grades. Produced by hot piercing and rolling without any weld seam, featuring uniform wall thickness, high pressure resistance, high temperature resistance and stable mechanical performance. Complete sizes and international standards available, widely used in oil gas, boiler, chemical, mechanical structure and pipeline engineering.
Our hot rolled seamless steel pipe is manufactured by professional hot rolling production process, taking solid round steel billet as raw material. After high temperature heating, rotary piercing, continuous rolling, sizing and straightening, the pipe forms an integral hollow structure without any welding seam. Compared with welded pipe, hot rolled seamless pipe has more compact internal metal structure, better toughness, higher pressure bearing capacity and stronger safety performance under high temperature, high pressure and harsh working conditions.
We adopt multiple material grades for selection, including carbon steel such as 10#, 20#, 45# and alloy steel like Q345B, 15CrMo, 12Cr1MoV. Each material strictly complies with international chemical composition and mechanical property standards, ensuring stable tensile strength, yield strength and elongation of each batch of products. The outer diameter ranges from 32mm to 630mm, wall thickness from 3mm to 80mm, covering light wall, standard wall and heavy wall specifications to meet different engineering and industrial demands.
All production processes follow GB/T8162, GB/T8163, GB3087, GB5310, ASTM A106, ASTM A53, API 5L and other global authoritative standards. Every pipe is inspected by hydrostatic pressure test, ultrasonic testing, magnetic particle testing and visual appearance inspection to ensure no cracks, no sand holes, no delamination and qualified dimensional tolerance. The surface is original hot rolled black finish with smooth outer and inner wall, low fluid resistance, easy for cutting, bending, welding, threading, galvanizing, painting and deep processing.
Standard length is 6m, 9m and 12m, customized fixed cutting length is acceptable. Pipe ends can be plain end, bevelled end or threaded end according to customer requirements. The products are widely applied in oil and gas transmission, power plant boiler pipeline, chemical high temperature and high pressure fluid pipeline, mechanical hydraulic cylinder, heavy equipment parts, high-rise building structure support, bridge engineering, heat exchanger and pressure vessel industry.
We have large inventory of conventional sizes, strict quality control system and professional export packaging. The pipes are bundled with steel strips and equipped with plastic end caps to avoid deformation, collision and rust during long-distance sea and land transportation. With stable quality, competitive price and on-time delivery, we have established long-term cooperative relations with global distributors, engineering contractors and manufacturing enterprises.
Product Features:
1. Seamless integral structure, no weld seam, excellent pressure and leakage resistance.
2. Multiple steel grades available: carbon steel and alloy steel for different working conditions.
3. Hot rolled grain refinement, high strength, good toughness and impact resistance.
4. Uniform wall thickness and precise dimension, small tolerance, good straightness.
5. High temperature and high pressure resistant, suitable for harsh industrial environment.
6. Strict non-destructive testing and hydrostatic test, stable batch quality.
7. Wide size range from small to large diameter, light wall to heavy wall.
8. Original black hot rolled surface, easy for welding, machining and surface treatment.
9. Comply with international standards, MTC inspection certificate can be provided.
10. Large stock, fast delivery and professional export packaging.
Frequently Asked Questions (FAQ):
Q: What is hot rolled seamless steel pipe?A: It is a hollow steel pipe made by heating solid steel billet, rotary piercing and hot rolling, without any welding seam. It has higher pressure resistance and better mechanical performance than welded pipe.=
Q: What material grades do you supply?A: We provide 10#, 20#, 45# carbon steel and Q345B, 15CrMo, 12Cr1MoV alloy steel for options.
Q: What standards do your products comply with?A: Our seamless pipes meet GB/T8162, GB/T8163, GB3087, ASTM A106, ASTM A53, API 5L.
Q: Can you make custom length and pipe end processing?A: Yes, we can cut to customized length, and supply plain end, bevelled end and threaded end.
Q: What’s your delivery time?A: 7-15 days after deposit, stock goods can be shipped faster.
| Item |
Specification |
| Product Name |
Hot Rolled Seamless Steel Pipe |
| Material Grade |
10#,20#,45#,Q345B,15CrMo,12Cr1MoV |
| Production Process |
High Temperature Heating → Rotary Piercing → Hot Rolling → Sizing → Straightening |
| Executive Standard |
GB/T8162,GB/T8163,GB3087,GB5310,ASTM A106,ASTM A53,API 5L |
| Outer Diameter |
32mm – 630mm |
| Wall Thickness |
3mm – 80mm |
| Standard Length |
6m/9m/12m,Customized Length Available |
| Pipe End |
Plain End,Bevelled End,Threaded End |
| MOQ |
100 Ton |
| Delivery Time |
7-15 Days |
| Surface Finish |
Hot Rolled Black Original Surface |
