$299.00 - $620.00
Min. Order : 1 Ton

ASTM A53 erw welded round steel pipe welding Mild black pipe carbon steel pipe manufacturer for building

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Quick Details

Port: Tianjin Port, China
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram,Paypal/Alibaba
Supply Ability: 5000 Ton/Tons per Month square steel pipe
Secondary Or Not: Non-secondary
Place of Origin: Hebei China
Tolerance: ±10%
End protector: Plastic Pipe Cap
Grade: 10#-45#,10#,20#,16mn,16mn,A53-A369,A106(B,C),A333,A210,ST35-ST52,ST37,ST42,ST45,ST35.8,St37-2,ST35.4,St52.4,ST35,ST37.4
Standard: API,API 5L,ASTM,ASTM A106-2006,ASTM A335-2006,ASTM A333-2005,ASTM A179-1990,ASTM A358-2005,ASTM A53M-2007,ASTM A334-2004,ASTM A335M-2006,bs,BS 1387,BS 6363,DIN,DIN EN 10025,GB,GB/T 3090-2000,GB/T 13793-1992,GB 6479-2000
Material: Q195/Q235/Q345
Processing Service: Bending,Welding,Decoiling,Punching,Cutting
Section Shape: Square
Certification: API, ASTM, CE, ISO
MOQ: 1 Ton
Surface: Black Painted
Outer Diameter: 15*15-500*500mm
Thickness: 1 - 30 mm
Item: Hot Rolled Technique
Type: Seamless Steel Pipe
Alloy Or Not: Non-Alloy
Technology: Hot Rolled Cold Rolled
Length: Random Length
Product name: Seamless Steel Pipe
Special Pipe: Thick Wall Pipe
Surface Treatment: black paint, varnish, oil, galvanized
Technique: Hot Rolled
Application: Structure Pipe
Packaging Detail: Loose package;Packaged in bundles(2Ton Max) ; bundled pipes with two slings at the both end for easy loading and discharging; wooden cases; waterproof woven bag.
Package Preview: https://sc04.alicdn.com/kf/Hb1239ce6d60e42d3bfef8dafa0a87849p.jpg_640x640.jpg
Cangzhou Zhongshun Steel Pipe Trade Co., Ltd.
Trading Company
Response Time
On-time delivery rate
US$ 2,000+
R&D staffs
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Product Description
Product Name
16Mn,A106,A36,A210,ST35  St35.4  St35.8 St37  St37-2  ST37.4  St42  St42-2  St45 St45-4  St45-8  St52
Size 15mm*15mm-500mm×500mm
ASTM A500, ASTM A513
ISO 9001:2008,SGS, BV, CCIC etc
Wall thickness
Surface Treatment
black paint, varnish, oil, galvanized
Standard marking, or according to your request. Marking Method: Spray white paint
Pipe Length
1. Single Random Length and double Random Length.
2. SRL:3M-5.8M  DRL:10-11.8M or As clients requested length
3. fixed length(5.8m, 6m, 12m)
Loose package;  Packaged in bundles(2Ton Max);  bundled pipes with two slings at the both end for easy loading and discharging; wooden cases; waterproof woven bag.
Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection
Structural projects; Trailers; Frames; Shelves; Racks; Ornamental
1.Reasonable price with excellent quality
2.Abundant stock and prompt delivery
3.Rich supply and export experience, sincere service
4.Reliable forwarder, 2-hour away from port.
Products Show
Our Service

Quality testing

Pls assured pipe quality. Our company can offer SGS, BV, CCIC etc.

Free samples

Our company can offer free samples for quality evaluation.

After-sale service

7x24 service. Responsible for products quality.

Our Company









Packing & Delivery


1. in bundle with steel strip.
2. nesting-save space
3. waterproof plastic woven bag
4. large diameter with separate package
5. wooden cases for small thickness pipe
6. wooden cases for pipe fittings
Customer Photo


Visiting factory


Our customer from Europe come to visit our factory and ordered more than 1000 tons steel pipe. We have establish long-term business relationship.

Checking products quality


Our customer now checking product quality with our engineer.



Confirming all details


Our customer confirm all details like delivery time, payment terms etc.


Q:I haven't done business with you guys before,how can I trust your company?

A: Our company has been in Alibaba.com for 7, almost 7 years, which is longer than most of our fellow suppliers, we've been golden suppliers for years. What's more, we've got quite a
lot authority certificates, for example, CE, ISO9001, API, Alibabaonsite check certificate. I
 hope those above will be persuasive enough. Our Trade Assurance Limit is US $230,000,and it is still going up.


Q: What is the minimum order?

A:Yes, our company mainly deals with wholesale deals, but if you insist buying one piece, or you just need one piece, we would be very likely to make the MOQ as 1 piece for you though.

Q: How can I get a sample to check your quality? How long can I get the sample?

A:After price confirmed, FREE SAMPLE could be provided for your evaluation. After you confirm the sample details, the samples will be ready for delivery in3-7days, and will be sent to you via express and arrive in 3-5days.

Q: What's the shipment terms and delivery time of your company?


A:15-25 daysfor bulk, 5-10 workingdays for inventory

Pls contact me