High Quality Hollow Section-Square Tubes
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- Loading Port:
- China main port
- Payment Terms:
- TT or L/C
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 1000 m.t./month
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High Quality Hollow Section-Square Tubes
Product Applications:
It is widely used in building, machine, chemical equipment, automobile industrial, container, it is also applied to agriculture and mine machine.
Product Specifications:
Standards: ASTM A500, GB6728
Grade: ASTM A500: A, B, C; GB6728: Q195, Q215, Q235, Q345
Sizes:
*Remark: Besides below sizes, we also can arrange production based on requirement of customers
Size (mm) | Thickness (mm) |
20×10 | 0.6-1.0 |
25×12 | 0.6-1.0 |
38×19 | 0.6-1.5 |
50×25 | 0.6-1.5 |
50×30 | 1.6-3.0 |
60×40 | 1.5-3.5 |
75×50 | 1.5-4.0 |
80×40 | 1.5-4.0 |
100×50 | 2.0-6.0 |
100×60 | 2.0-6.0 |
100×75 | 2.0-6.0 |
120×60 | 3.0-6.0 |
120×80 | 3.0-6.0 |
125×50 | 3.0-6.0 |
125×75 | 3.0-6.0 |
150×50 | 3.0-6.0 |
150×75 | 3.0-6.0 |
150×100 | 4.0-12 |
160×80 | 4.0-6.0 |
175×100 | 4.0-12 |
200×100 | 4.0-12 |
200×150 | 4.0-12 |
250×150 | 5.0-12 |
300×200 | 5.0-12 |
400×200 | 5.0-12 |
Chemical Composition:
Chemical Requirement | ||||
| Composition % | |||
| Grade A | Grade B | ||
| Heat | Product | Heat | Product |
Element | analysis | analysis | analysis | analysis |
Carbon max | 0.26 | 0.3 | 0.22 | 0.26 |
Manganese max | … | … | 1.4 | 1.45 |
Phosphorus, max | 0.035 | 0.045 | 0.03 | 0.04 |
Sulfur max | 0.035 | 0.045 | 0.02 | 0.03 |
Copper, when copper steel is specified, min | 0.2 | 0.18 | 0.2 | 0.18 |
Where an ellipsis (...)appears in this table, there is no requirement | ||||
For each reduction of 0.01 percentage point below the specified maximum for carton, and increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50% by heat analysis and 1.6% by product analysis | ||||
Mechanical Properties:
Tensile Requirement | ||
| Grade A | Grade B |
Tensile strength, min, psi (Mpa) | 48000 (400) | 70000 (483) |
Yield strength, min, psi (Mpa) | 36000 (250) | 50000 (345) |
Elongation in 2 in. (50.8mm), min, % | 23 | 23 |
GB6728:
Steel Grade | CHEMICAL COMPOSITION | MECHANICAL PROPERTIES | ||||||
C (%) | Si (%) | Mn (%) | P (%) Max | S (%) Max | YS (Mpa) Min | TS (Mpa) Min | El (%) Min | |
Q195 | 0.06-0.012 | 0.3 | 0.25-0.5 | 0.45 | 0.5 | 195 | 315 | 22 |
Q215 | 0.09-0.15 | 0.3 | 0.25-0.55 | 0.45 | 0.5 | 215 | 335 | 22 |
Q235 | 0.12-0.22 | 0.3 | 0.3-0.7 | 0.45 | 0.45 | 235 | 375 | 20 |
Q345 | 0.20 | 0.55 | 1.0-1.6 | 0.45 | 0.45 | 345 | 510 | 21 |
Packaging: Packed in bundles, each bundle with 6-8 steel stripes and 2 nylon strips or one by one Or Nested into Containers
Product Images:
FAQ:
Q1: Why buy Materials & Equipment from OKorder.com?
A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
Q2: How do we guarantee the quality of our products?
A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
Q3: How soon can we receive the product after purchase?
A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Q4: What makes stainless steel stainless?
A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
Q5: Can stainless steel rust?
A5: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.
Q6: What is the difference between galvanized steel and galvalume steel?
A6: Galvanized steel is metallic coated with Zinc in various coating weights. Minimum recommended for painted metal roofs is G90. Galvalume is a zinc and aluminum coated steel that becomes an alloy and is recommended in either painted or bare applications with a minimum coating weight of AZ50. Galvalume has an excellent performance life in bare exposures. Hence if you are using a bare panel use galvalume and if painted use either.
Q7: Is there a difference in thermal conductivity between stainless steel and steel?
A6: Yes. Stainless Steel has a lower thermal conductivity rate than steel; approximately 1/3 to 1/5th depending on the material.
Q8: Is there a difference in electrical conductivity between stainless steel and steel?
A8: Yes. Steel is generally more conductive than stainless steel. Steel has resistivity in the range of 10~20Ωm, while stainless has a resistivity of approximately 60~72Ωm.
- Q:Steel pipe is particularly long, how to clean the inner wall of the pipe so that it can be thoroughly cleaned
- If the pipe is relatively long, you have water, you can buy ultrasonic vibration plate into the water for ultrasonic cleaning, if not too long with an ultrasonic vibration rod, inserted into the pipe cleaning, and then rinse with water by ultrasonic stripping of dirt, give you recommend a factory in Jining Hengda
- Q:Can seamless steel pipe and ordinary steel pipe be welded?
- Seamless steel tube branch and seamed two, seamed steel pipe welding is formed, all two can be welded together, if you do not allow the use of seam tube cannot connect.
- Q:Fastener type steel pipe scaffold steel pipe wall thickness
- The scaffold steel pipe shall be made of 48.3 * 3.6 steel tube. The maximum mass of each steel tube shall not be greater than 25.8kg.Fastener type steel pipe scaffold: for building construction and build, bear the load by the fastener and steel pipe and other scaffolding and support frame, collectively referred to as scaffolding. The fastener is a fastening piece which is fastened by bolts.
- Q:What time what time for gas pipeline steel pipe PE pipe
- PE pipe must be installed underground, the steel tube can be exposed, when not all PE pipe for pipe laying, overhead installation. But the steel tube is easy to rust, so it can be used where the basic use of PE pipe buried PE pipe.There are galvanized steel pipe and seamless steel pipe, galvanized pipe can only be used for low-pressure homes
- Q:Why can't stainless steel be put together with carbon steel tube?
- The bimetallic corrosion is terminated only when one of the three conditions is changed. Galvanic corrosion is related to the contact area of bimetal and the greater the contact area. Corrosion is less. The driving force of galvanic corrosion is the potential difference.[galvanic corrosion] refers to two or more than two kinds of electrode potential of metal in the corrosive medium, and contact with each other caused by electrochemical corrosion, also known as contact corrosion or double metal corrosion.
- Q:What is the production process of seamless steel tube?
- The main production process for hot rolling seamless steel tube (the main inspection):Tube preparation and check delta to billet heating, heating, rolling, perforated pipe, steel pipe and heat treatment, diameter (minus) Delta to finished tube straightening, finishing and inspection of delta (nondestructive, physicochemical, Taiwan inspection and warehousing)
- Q:Welded and seamless steel pipe how to distinguish?
- Different price:Because the production process of seamless steel tube is more complex, so the price is more expensive than a seamed steel pipe, and pipe joints mainly adopts steel (steel) two welded, fixed price, the most widely used are.
- Q:Difference and application of seamless hot rolled pipe and cold drawn pipe in seamless steel tube
- The general production of hot-rolled seamless steel pipe in the automatic tube rolling mill. Solid billet after inspection and clearance of surface defects, cut into required length, in the tube hole end surface of centering, then sent to a heating furnace, in punch in punch. While continuing to rotate and advance, in the roll and immediate action, tube gradually form a cavity, called capillary. Sent to the automatic tube rolling mill on rolling. Finally after all the entire thickness, sizing machine sizing, achieve specifications. Using continuous pipe mill production of hot-rolled seamless steel tube is advanced.1.2, in order to obtain smaller size and better quality of seamless tube, cold rolling, cold drawing must be used or combined method of cold rolling. Usually in two roller mill, rolling ring groove tapered plug pipe in variable cross section circular slot and the composition. Drawing is usually in single or double 0.100T chain drawbench.1.3, the extrusion method will soon heat the tube blank in the closed extrusion cylinder, the perforation bar and extrusion rod movement, so that extrusion parts from the smaller die hole extrusion. This method can produce smaller diameter steel pipe
- Q:What's the difference between No. 20 steel pipe and 27SiMn Steel Pipe?
- 27SiMn =27 - steel pipe, which is a seamless steel tube material, the carbon content in 0.24 - 0.32%, SIMN single because it five elements (carbon manganese silicon Si, C, Mn, P P, S, guimeng sulfur) the high content of about 1.10 - 1.40%.
- Q:What does "buried steel pipe" 6*2SC100 mean?
- Welded steel pipe refers to the use of steel or steel plate bending deformation into a round, square and other shapes after welding into the surface of the joint of the steel pipe. The blank used in welded steel pipe is steel or strip steel.
1. Manufacturer Overview |
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| Location | Hebei, China |
| Year Established | 1988 |
| Annual Output Value | Above One Hundred Million RMB |
| Main Markets | Main land; Southeast Asia; Middle East; Africa |
| Company Certifications | ISO 9002:2010；API 5L |
2. Manufacturer Certificates |
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| a) Certification Name | |
| Range | |
| Reference | |
| Validity Period | |
3. Manufacturer Capability |
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|---|---|
| a)Trade Capacity | |
| Nearest Port | Tianjin |
| Export Percentage | 30%-50% |
| No.of Employees in Trade Department | 201-500 People |
| Language Spoken: | English; Chinese |
| b)Factory Information | |
| Factory Size: | 50,000 square meters |
| No. of Production Lines | Above 15 |
| Contract Manufacturing | Meicai Metal Trading Co.Ltd |
| Product Price Range | Average |
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