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Seamless Pipe

1.High temperature strength
2. High creep rupture strength
3.Resistant to oxidation and carburization in high temperature environments
4.Good corrosion resistance in many acidic environments
5.Good resistance to many sulfur-containing atmospheres
If you have any requirements, please click the button below to get in touch with us

  • Seamless Pipe


Product Details

Product name

 Stainless Steel  Seamless Pipe 

Brand name



ASTM A312, ASTM A554, ASTM A790, EN10216-5, EN10217-7, JIS G3468, JIS G3459


304, 316L, 321, 310S, 1.4301, 1.4307, 1.4404, S31803, S32750, 904L, Monel 400, Inconel 800


Pickling, 400grit polishing, 600grit polishing, mirror finish




In bundles with waterproof material, in wooden cases


By sea, by air, by express


Chemical Composition(%) 


C Si Mn P S Cr Ni Mo N Cu


≤0.15 ≤0.75 5.5~7.5 ≤0.060 ≤0.03 16.00~18.00 3.5~5.5 - - 0.08 1.5
202 ≤0.15 ≤1.00 7.5~10.00 ≤0.060 ≤0.03 17.00~19.00


- ≤0.25

301 ≤0.15 ≤1.00 ≤2.00 ≤0.045 ≤0.03 16.00~18.00 6.00~8.00 -

302 ≤0.15 ≤1.00 ≤2.00 ≤0.035 ≤0.03 17.00~19.00 8.00~10.00 -

304 ≤0.07 ≤1.00 ≤2.00 ≤0.045 ≤0.03 18.00~20.00 8.00~10.50 -

304L ≤0.030 ≤1.00 ≤2.00 ≤0.045 ≤0.03 18.00~20.00 9.00~13.00 -

310S ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 24.00~26.00 19.00~22.00 -

316 ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 16.00~18.00 10.00~14.00 2.00~3.00

316L ≤0.03 ≤1.00 ≤2.00 ≤0.045 ≤0.03 16.00~18.00 12.00~15.00 2.00~3.00

321 ≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 17.00~19.00 9.00~13.00 -


≤0.12 ≤0.75 ≤1.00 ≤0.040 ≤0.03 16.00~18.00

2205 ≤0.03 ≤1.00 ≤2.00 ≤0.030 ≤0.015 22.00~23.00 4.5~6.5 2.5~3.5

2507 ≤0.03 ≤0.08 ≤1.20 ≤0.035 ≤0.015 24.00~26.00 6.00~8.00 3.0~5.0

904L ≤0.02 ≤1.00 ≤2.00 ≤0.045 ≤0.035 19.00~23.00 23.00~28.00 4.0~5.0




≤0.03 ≤1.00 ≤2.50 ≤0.030 ≤0.030 ≤28.0 ≤34.0 ≤4.0



≤0.30 ≤0.5 ≤2.00 - ≤0.024 - ≥63.0 -



≤0.10 ≤1.00 ≤1.50 - ≤0.015 ≤23.0 ≤35 4.0~5.0 - ≤0.75



Video description:

Our advantages:

The delivery time is fast

We attach great importance to for delivery within 50 tons we can guarantee delivery within 20 days.


Good product service

Provide all kinds of stainless steel seamless pipe polishing, welding, drilling, bending, lathe processing and other services

Seamless Pipe A

Super long coil, longer than 1000 meters


Customizable service


China manufacturer per meter price of 304 seamless stainless steel pipe


 Have you met tube edge deformation and tube bending problems after getting the goods ?

We give complete and several times of correcting for each tube with particular equipment during production

 as well as proper packing to avoid edge deformation or bending before delivery. 


China manufacturer per meter price of 304 seamless stainless steel pipe


Have you got the problems from unacceptable tolerance

 when you are checking the stainless steel pipes from your previous supplier ?

With our tolerance control machine equipments

 strict inspection process has been proceeded to make sure our stainless steel pipes produced and

 finished by all standards of ASTM, EN, JIS etc.



China manufacturer per meter price of 304 seamless stainless steel pipe


Have you ever met defective and such a bad surface finish ?

There must be complete pickling process given during our stainless steel pipes' production. 

And we also provide stainless steel pipe surface treatment requirement from our clients, such as polishing, grinding,hairline etc.

Factory Display

工厂展示 (1) (1)

工厂展示 (2)

China manufacturer per meter price of 304 seamless stainless steel pipe


China manufacturer per meter price of 304 seamless stainless steel pipe


Inconel 600/601/625/718/X-750 Fixed Tube

Our company's credit guarantee


销售 (1)

Product application field

应用领域1 (2)

应用领域2 (1)

应用领域3 (1)

Our company's partner

corporate partner

Company profile

China manufacturer per meter price of 304 seamless stainless steel pipe

Hunan Allianz Metal products Co., LTD, established in 1996, which enjoys great reputation among over 1000 customers and cooperation partners from more than 60 countries.

We have regularly kept over 6000 tons stock, including stainless steel welded pipes , stainless steel seamless pipes, stainless steel pipe fittings and round bars. Overmore, 3 days delivery time for common products, which helps our customers a lot to close a deal  with their partners. 

China manufacturer per meter price of 304 seamless stainless steel pipe

China manufacturer per meter price of 304 seamless stainless steel pipe

Customer visit and evaluation

客户来访图片 (1) (1)

客户来访图片 (2)



Carlos Sanchez

1 2 3 4 5

When I met RONSCO at the Dutch stainless steel show in 2015, I just left the contacts. Although Cady has been taking pains to follow up our cooperation, our company has a strict supplier audit process, and we have no cooperation from 2013 to 18 years. During this period, we will still attend every Dutch stainless steel exhibition, and RONSCO is always an exhibitor. Every time, he would send us a polite email to ask us to visit their booth.

Until the 19th year, the supplier we cooperated with had problems. We were told that the goods we used to build the power plant could not be delivered. If the goods could not be delivered on time, we would lose nearly 200,000 dollars. We had to try to talk to Cady, and finally started our first cooperation with RONSCO. Although we tried to place large orders in the first cooperation, we had no choice. Finally, to our surprise, RONSCO is not only more advantageous in price, but also very skilled in quality control. For the temporarily added orders, we need the cooperation of the supplier. Here, I really appreciate Cady's timely follow-up.


Andrés Osorio

1 2 3 4 5

When I was working with RONSCO, I was just starting my import business. My friend told me to look for suppliers in alibaba, but everything seems not so simple. I found a supplier on alibaba at first, the price was very attractive, and finally I received a pile of garbage. After working with RONSCO, Neo gave me lots of useful advice, I appreciate most is the company to the customer patience, remember once, because of my problems lead to problems of the bill of lading, I shut up, tens of thousands of dollars worth of goods buckle at the customs, the losses for I really can't afford the newly established company, at that time I am very anxious, unceasingly in the Neo without handle, also complained that it won't work with RONSCO again.

Neo is very tolerant of my bad temper, never accused me, and then constantly contact the forwarder, the best time in the customs to help me pick up the goods. I felt ashamed and apologized to him. RONSCO always emphasizes that problems should be dealt with as soon as they appear, and then who is right and who is wrong after the problems are solved. Now we have cooperated for two years, and my company is also developing well now. I would like to thank RONSCO as the supplier here.


Paras shah

1 2 3 4 5

What I admire most about RONSCO is their attention to detail. Each of them seems to strive for perfection. I have visited RONSCO's factory many times. They are very busy and their business is very good. Every time I go to China, I like to visit their factory. What I value most is quality. Both my own products and the products they produce for other customers need good quality, so as to reflect the strength of this factory. So every time I have to go to their production line to see the quality of the products they produce, I am very happy, over the years, their quality is still so good, and for different markets, their control of quality also follows the market changes.



1 2 3 4 5

Communication is the biggest problem in international trade. Every time I was very careful to make sure that all the details were in place. In the past 4 years of cooperation with RONSCO, the only major accident we had was due to a communication problem, which resulted in the inconsistent logo of our products. The atmosphere was tense, we were all angry and none of us wanted this to happen. In the end, it was RONSCO who took the responsibility, and we agreed with half a half to take the responsibility this time.

Although we will have disputes, RONSCO is able to control his emotions and take the responsibility to pay compensation, which makes me trust their character very much. Later, we have strengthened communication and become more proficient in cooperation. We are now strategic partners.

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