GB/T8163 20# Carbon Steel Seamless Pipe for Sale

Production

The GB/T 8163 #20 seamless steel pipe is one of the most widely utilized carbon steel pipes in the industrial sector, specifically engineered for conveying water, oil, gas, and other fluids under moderate pressure. At Dexin, our #20 grade seamless tubes are manufactured to strictly adhere to China's national standards, ensuring excellent weldability and cold deformation stability.

Why Choose #20 Grade Over Other Materials?

Compared to #10 steel, the #20 carbon steel offers a higher carbon content, providing superior strength and hardness while maintaining the necessary ductility for bending and flattening. It is the "golden middle" for liquid service pipelines, offering the best balance between cost-efficiency and mechanical performance. Whether you are working on municipal heating systems, chemical processing plants, or long-distance water irrigation, our GB/T 8163 #20 pipes provide a leak-proof, high-durability foundation.

Key Technical Advantages of Dexin’s GB/T 8163 Pipes: Precision Tolerance: Controlled outer diameter and wall thickness to ensure seamless integration with standard fittings. Superior Surface Quality: Each pipe undergoes professional pickling and smoothing processes to reduce flow resistance inside the tube. Rigorous Testing: 100% Hydrostatic and Ultrasonic testing performed in-house to guarantee safety in high-pressure environments.

In industrial applications like hydraulic systems, heating networks, and equipment structures, safe pressure-bearing capacity, cost-effectiveness, and flexible processing are perpetual requirements. Our GB/T 8163 Grade 20 seamless steel pipes, combining national-standard quality as a shield and masterful craftsmanship as a spear, deliver the ultimate go-to solution for medium-low pressure fluid transportation and machinery manufacturing!

Get a free quote today or send us your specifications — fast response and competitive pricing guaranteed!

Product Parameters

Process	Cold Rolled / Hot Rolled
Material Grade	API, ASTM, BS, DIN, GB, JIS
Certificates	RoHS, SNI, BIS, SASO, SONCAP, API, ISO
Trade Terms	EXW, CFR, CIF
Payment Terms	30% T/T deposit, 70% final payment
Available Sizes	Seamless steel pipe with outer diameter from 1/8" (10.3mm) to 56" (1422.4mm), wall thickness up to 5.91" (150mm)
Payment Clause	30% T/T, 70% final payment
Application	Waterworks, Petrochemical, Power Industry, Agricultural Irrigation, Urban Construction
Surface Treatment	Galvanized, PVC Coating, Black and Color Paint, Clear Oil, Anti-rust Oil as per customer requirement
Company Advantages	1. Complete specifications and customization available
	2. Strict material selection and precise cutting
	3. Factory visits supported — we welcome all partners to visit and explore win-win cooperation

About Us

Dexin Steel Tube (China) Co., Ltd is one of the leading seamless steel pipe manufacturers in China with ISO9001 certification, specializing in the production and export of various seamless steel pipes. Dexin has the most advanced production equipment to ensure the best product quality. It has a complete production process and related equipment including coking, sintering, steelmaking and rolling, including related energy and power systems. At the same time, we have also achieved the integrity and systematization of modern steel industry production technology.

Our products are exported to North America, Europe, the Middle East, South America, Southeast Asia, Africa, Australia and other countries and regions with high quality and service. After 30 years of development, Zhentong Steel Pipe has become a domestic competitive steel enterprise group. Our company aims to provide customers with high-quality and low-cost seamless steel pipes and strive to create value for customers. Overseas customers are welcome to visit!

FAQ

Q1. Are you a trading company or a manufacturer?

A: We are a professional seamless steel pipe manufacturer based in Wuxi, Jiangsu Province, China. Our factory, workshop, and warehouse are all located here. We warmly welcome all clients to visit our facilities.

Q2. Can I visit your factory?

A: Absolutely! We welcome customers from all over the world to tour our factory and inspect our production process and quality system.

Q3. How can I get a quotation from you?

A: You can leave us a message on the website — we reply to every inquiry promptly. You may also chat with us via Trade Manager or find our contact information on the Contact Us page.

Q4. How is your pricing?

A: As a factory, our prices are very competitive. If you are interested in our products, feel free to reach out for a quote.

Q5. Do you offer custom product services?

A: Yes, we can manufacture based on your drawings or detailed specifications.

Q6. What is your delivery time?

A: Normally, the delivery time is around one month for a 40-foot container. For stock items, we can ship within 3 days.

Q7. What payment terms do you accept?

A: We accept T/T, 100% L/C at sight, cash, and Western Union. Other payment methods can be discussed as well.

Q8. What information should I provide to purchase seamless steel pipes?

A: Please specify the steel grade, outer diameter, length, quantity, and whether any coating is required — this helps us offer an accurate quote quickly.

Q9. How do you handle defective products?

A: Replacements are guaranteed. If any items are found defective, we will either credit them to your next order or send replacements free of charge.