Round Carbon Steel Tube Q235 Q355 A36 St37.4 Seamless Welded Carbon Steel Pipe

• Customization: Available
• After-sales Service: Contact Supplier
• Warranty: Contact Supplier
• Model NO.: Carbon
• Technique: Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round/Square
• Name: Carbon Steel Square/Round Pipe
• Surface: Black
• Type Tube: Welded/Seamless
• Grade: Q195-Q345, Q235
• Special Pipe: API Pipe, Other, EMT Pipe, Thick Wall Pipe
• Thickness: 0.5 - 3 mm
• Length: 12m, 6m,5.8m, etc
• Certificate: CE, ISO9001
• Processing Service: Welding, Punching, Cutting, Bending, Decoiling
• Shape: Sqaure and Rectangular Steel Tube
• MOQ: 3tons
• Advantage: Big Amount in Stock,Fast Delivery
• Sample: Avalible
• Size: 20X20 -- 400X400 mm
• Transport Package: Sea Worth Packing
• Specification: Customized Oder
• Trademark: ZK
• Origin: China, Shandong
• HS Code: 7304399000
• Production Capacity: 500000tons Each Year

Product Description

Carbon steel square/round pipe

Carbon steel square pipe is made of steel ingot or solid round steel which is perforated into wool tube and then hot rolled, cold rolled or cold drawn. Carbon steel pipe plays an important role in our steel pipe industry. According to incomplete statistics, existing carbon steel pipe manufacturers in our country about 240 more than 250 sets of carbon steel pipe units, annual capacity of about more than 4.5 million tons. 760,000 tons of oil pipe, accounting for 5.7%; Hydraulic prop, precision pipe 150,000 tons, accounting for 4.3% stainless pipe bearing pipe, automobile pipe 50,000 tons, accounting for 1.4%.

Product Parameters

 

Product Name	Q235 S235 sS400 Black welded rectangular square steel pipe RHS SHS steel tube
Material	carbon steel
Standard	GB/T6725 GB/T6728 EN10210EN10219,ASTM A500ASTM A36.AS/NZS1163.JIS.EN.DIN17175
Grade	Q195,Q235(A,B,C,D),Q345(A,B,C,D),ASTM A500.S235JR.S235JOH.S355JR.S355JOH.C250LO.C350LOSS400
Delivery&Shipme	1)By Container(1-5.95 meter suitable to load 20ft container6-12 meter length nt suitable to load 40 ft container) 2) Bulk shipment

Carbon steel pipes are divided into two categories:
hot-rolled and cold-rolled (drawn) steel pipes.
Hot-rolled carbon steel pipes are divided into general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.

In addition to general steel pipes, low- and medium-pressure boiler steel pipes, high-pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, and other steel pipes, cold-rolled (rolled) carbon steel pipes also include carbon thin-walled steel pipes, alloy thin-walled steel pipes, and stainless steel pipes. Rusty thin-walled steel pipes, special-shaped steel pipes. The outer diameter of hot-rolled seamless steel pipes is generally greater than 32mm, and the wall thickness is 2.5-75mm. The outer diameter of cold-rolled seamless steel pipes can be up to 6mm, and the wall thickness can be up to 0.25mm. The outer diameter of thin-walled pipes can be up to 5mm, and the wall thickness is less than 0.25mm. Cold rolling has higher dimensional accuracy than hot rolling.

General carbon steel pipe: It is made of hot-rolled or cold-rolled high-quality carbon steel such as 10, 20, 30, 35, 45, 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steel. Seamless pipes made of 10 and 20 grade low carbon steel are mainly used for fluid transportation pipelines. Seamless tubes made of medium carbon steel such as 45 and 40Cr are used to manufacture mechanical parts, such as stressed parts of automobiles and tractors. Generally, carbon steel pipes must ensure strength and flattening tests. Hot-rolled steel pipes are delivered in a hot-rolled or heat-treated state; cold-rolled steel pipes are delivered in a heat-treated state.
 

 

 

REGULAR SIZE
SIZE (OUTER DIAMETER)	WALL THICKNESS	LENGTH
20x20 / 25x25	1.2MM --2.75MM	6M IN STOCK (OR CUSTOMIZED)
30x30 / 20x40 / 30x40 / 25x40	1.2MM -- 3.5MM	6M IN STOCK (OR CUSTOMIZED)
40x40 / 50x5030x50 / 25x50 / 30x60 / 40x60	1.2MM -- 4.75 MM	6M IN STOCK (OR CUSTOMIZED)
60x60 / 50x70 / 40x80 / 40x50	1.2 MM -- 5.75 MM	6M IN STOCK (OR CUSTOMIZED)
70x70 / 60x80 / 50x80 / 100x40 / 50x90	1.5MM -- 5.75 MM	6M IN STOCK (OR CUSTOMIZED)
75x75 / 80x80 / 90x90 60x100 / 50x100 / 120x60 / 100x80 / 60x90	1.5MM -- 7.75 MM	6M IN STOCK (OR CUSTOMIZED)
100x100 / 120x80	1.8MM -- 7.75 MM	6M IN STOCK (OR CUSTOMIZED)
120x120 / 130x130 180x80 / 160x80 / 100x150 / 140x80 / 140x60	2.5MM -- 10.0 MM	6M IN STOCK (OR CUSTOMIZED)
140x140 / 150x150 / 100x180 / 200x100	2.5MM -- 10.0 MM	6M IN STOCK (OR CUSTOMIZED)
160x160 / 180x180 / 200x150	3.5MM -- 11.0 MM	6M IN STOCK (OR CUSTOMIZED)
200x200 / 250x150 / 100x250	3.5MM -- 11.0 MM	6M IN STOCK (OR CUSTOMIZED)
250x250 / 250x200 / 300x150 / 300x200	4.5MM -- 15.0 MM	6M IN STOCK (OR CUSTOMIZED)
300x300 / 350x200 / 350x250 /300x150	4.5MM -- 15.0 MM	6M IN STOCK (OR CUSTOMIZED)
350x350 350x300 / 450x250 / 400x300 / 500x200	4.5MM -- 15.75 MM	6M IN STOCK (OR CUSTOMIZED)
400x400 / 280x280 450x300 / 450x200 / 400x350 / 400x250 / 500x250 / 500x300	4.5MM -- 15.75 MM	6M IN STOCK (OR CUSTOMIZED)

TYPE OF TUBE

1.SQUARE TUBE/RETANGLE TUBE

 

 

FACTORY SHARE





2. ROUND TUBE/PIPE

Packing and Shipping

Container vessel and bulk vessel

FAQ

 

Q: Will the Test Certificate meet EN10204 3.1?

 

A: We will provide Original Mill Test Certificate certified to EN10204 3.1 for products in stock or further processing needed.

 

Q: Once the products received by customer were found not comply with the products or contract demands, what will you do?

 

A: We will compensate the customer for all the loss without any hesitation

 

Q: How long is your delivery time?

 

A: Generally it is 2-5 days if the goods are in stock or it will need 7-20 days if the goods need to be customized

 

Q: Do you provide samples ? Is it free or extra ?

 

A: Yes, we can offer free samples.

 

Q: What is your terms of payment?

 

A: 30% Prepayment and balance see B/L copy or can negotiable.