Home / Products / Steel Pipe / Seamless Steel Pipe

Seamless Steel Pipe

Your Leading Seamless Steel Pipe Supplier

Tangshan Zhenxiang Plate and Strip Processing Co., Ltd. has become a comprehensive steel enterprise integrating plate and strip longitudinal shearing, hot-dip galvanizing processing, machinery purchase and trading, and logistics distribution. A seamless steel pipe is formed by piercing a solid, near-molten, steel rod, called a billet, with a mandrel to produce a pipe that has no seams or joints. It's made from a solid steel billet, which is heated and stretched through a process that pierces it to create a hollow tube. Unlike welded pipes, seamless pipes offer a uniform, homogeneous structure throughout their length.

Why Choose Us

Broad Market

Our products are exported to over 200 countries and regions including exported to Southeast Asia, North Africa and Middle East market such as Korea, Vietnam, Thailand, Myanmar, Philippines, Singapore, Jordan, Dubai and Kuwait, etc.

Complete Qualifications

We have Bureau Veritas Certification Certificate, ISO9001Quality Management System Certificate, IOS14001Environmental Management System Certification Certifi-cate, Occupational Health Safety Management System Certification Certificate.

Advanced Equipment

The company has 13 steel-plate production workshops, 4 galvanized workshops, 10 warehouses and over 40 steel-plate processing production lines. It possesses strong production capacity and technical strength.

OEM & ODM Available

According to different markets and customer requirements, we offer personalized customization services in dimensions, materials, surface treatments, and more, helping clients build a differentiated competitive edge.

Types of Seamless Steel Pipe

Seamless Black Pipe

The seamless black pipe is made by stamping a whole round steel bar. The pipe without weld seams on its surface is called a seamless steel pipe. It is made by stamping a whole round steel bar. The pipe without weld seams is called a seamless steel pipe.

Erw Seamless Pipe

Erw seamless pipe refer to a type of steel pipe with high strength, strong corrosion resistance and high dimensional accuracy. They play a significant role in industries such as petroleum, chemical engineering, shipbuilding and heating.

Cold Drawn Steel Tube

The cold drawn steel tube through processes such as heating the steel billets, piercing, rolling, and cooling. Compared with welded steel pipes, seamless steel pipes have obvious advantages in appearance and performance.

Specifications of Seamless Steel Pipe

Technical Standard	Cold rolling/hot rolling
Standard	API, ASTM, bs, GB, API 5L, ASTM A106-2006,ASTM A53-2007, BS 1387, BS 1139, BS EN10219, GB 3087-1999, GB/T3901, EN, BS, JIS
Thickness	1.8mm-30mm
Length	6-12m
Outer DIA	10.3mm-610mm
Applications	Liquid delivery, structure pipe, construction, petroleum cracking, oil pipe, gas pipe
Delivery Time	15-30 days, depends on the quantity

Production Process

The main production processes are: pipe billet preparation and inspection → pipe billet heating → piercing → rolling → reheating of rough pipes → sizing (reduction) → heat treatment → straightening of finished pipes → finishing → inspection (non-destructive, physical, and on-site inspection) → storage.

productcate-1-1

Hardness Index of Seamless Steel Pipe

For seamless steel pipes, three commonly used hardnesses are Brinell, Rockwell and Vickers.

Brinell hardness (HB)
Use a steel ball or cemented carbide ball with a certain diameter to press into the surface of the sample with the specified test force (F), remove the test force after the specified holding time, and measure the indentation diameter (L) on the surface of the sample. The Brinell hardness value is the quotient of the test force divided by the surface area of the indentation spherical. Expressed in HBS (steel ball), the unit is N/mm2 (MPa).

Rockwell hardness (HR)
The Rockwell hardness test, like the Brinell hardness test, is an indentation test method. The difference is that it measures the depth of the indentation. That is, under the successive action of the initial test force (Fo) and the total test force (F), the indenter (cone or steel ball) is pressed into the surface of the sample, and after the specified holding time, the main force is removed. For the test force, use the measured residual indentation depth increment (e) to calculate the hardness value.

Vickers hardness (HV)
Vickers hardness test is also an indentation test method, which is to press a regular quadrangular pyramid diamond indenter with an angle of 1360 opposite sides into the test surface with a selected test force (F), and remove the test after a specified holding time. Force, measure the length of the two diagonals of the indentation.

Usage of Seamless Steel Pipe

productcate-1-1

Packaging & Delivery

Packaging	Standard export shipping packaging.
Packaging	The inner layer is waterproof paper, the outer layer is a bag, with iron packaging, and fixed with fumigated wooden pallets.
Payment	T.T with 30% downpayment, 70%before shipment.
Payment	Paypal or West Union also accept.
Shipping	By logistics; by automobile; by train; by shipping; by air.

FAQ

Q: Are you a trading company or a manufacturer?

A: Our company is a very professional and technical manufacturer of steel products. We have more competitive prices and the best after-sales service. Besides, we can also provide a wide range of steel products to meet the needs of customers.

Q: Can we visit your factory?

A: We are very welcome. Once we have your schedule, we will arrange a professional sales team to follow up on your case.

Q: Can I send samples?

A: Of course you can. We can send samples to all over the world. Our samples are free of charge, but customers have to pay for the courier fees.

Q: What is the minimum order quantity?

A: Generally speaking, we accept trial orders. The minimum order quantity can be determined according to different products.

Q: What is the difference between seamless steel pipe and spiral steel pipe?

A: Seamless pipes are used in different places according to different production standards, mainly for industry. Spiral pipes are mainly used for low-pressure water delivery, heating and piling pipes, etc.

Q: How to tell if seamless steel pipe?

A: You can use a magnet for a simple test: If the metal behaves magnetically, it probably isn't stainless steel. It's worth noting that some types of stainless steel May be slightly magnetic due to processing. Appearance and shine: Stainless steel has a distinctive shine and appearance.

We're well-known as one of the leading seamless steel pipe manufacturers and suppliers in China. Please feel free to wholesale customized seamless steel pipe from our factory. For price consultation, contact us.

Cold Drawn Steel Tube, Erw Seamless Pipe, Seamless Steel Pipe