Square tube is a name for square tube and rectangular tube, that is, steel tube with equal and unequal side lengths. It is made by rolling steel strips through processing. Generally, the steel strips are unpacked, flattened, curled, and welded to form round tubes, which are then rolled into square tubes and cut into required lengths.

Also known as square and rectangular cold-bent hollow steel, referred to as square tube and rectangular tube, with codes F and J respectively
1. The allowable deviation of the wall thickness of the square tube shall not exceed plus or minus 10% of the nominal wall thickness when the wall thickness is not more than 10mm, and plus or minus 8% of the wall thickness when the wall thickness is more than 10mm, excluding the wall thickness of the corners and weld areas.
2. The usual delivery length of the square tube is 4000mm-12000mm, with 6000mm and 12000mm being the most common. Square tubes are allowed to deliver short-length and non-fixed-length products of not less than 2000mm, and can also be delivered in the form of interface tubes, but the demander should cut off the interface tube when using it. The weight of short-length and non-fixed-length products shall not exceed 5% of the total delivery volume, and for square tubes with a theoretical weight greater than 20kg/m, it shall not exceed 10% of the total delivery volume.
3. The curvature of the square tube shall not exceed 2mm per meter, and the total curvature shall not exceed 0.2% of the total length

 

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

Square tube is a name for square tube and rectangular tube, that is, steel tube with equal and unequal side lengths. It is made by rolling steel strips through processing. Generally, the steel strips are unpacked, flattened, curled, and welded to form round tubes, which are then rolled into square tubes and cut into required lengths.

Seamless Steel Pipe the wall thickness of the product, the more economical and practical it is. The thinner the wall thickness, the higher the processing cost. Secondly, the process of the product determines its limited performance. Generally, seamless steel pipes have low precision: uneven wall thickness, low brightness of the inner and outer surfaces of the pipe, high cost of cutting, and pitting and black spots on the inner and outer surfaces are difficult to remove. Thirdly, its detection and shaping must be processed offline. Therefore, it has demonstrated its superiority in high pressure, high strength, and mechanical structure materials.

Spiral pipes are mainly used in water supply projects, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. They are one of the 20 key products developed in China. For liquid transportation: water supply, drainage, sewage treatment projects, mud transportation, and marine water transportation. For gas transportation: coal gas, steam, and liquefied petroleum gas. For structural use: as pile pipes, bridges; pipes for docks, roads, building structures, and marine pile pipes, etc.

Galvanized steel pipe is a welded steel pipe with hot-dip or electroplated zinc layer on the surface. Galvanizing can increase the corrosion resistance of steel pipes and extend their service life. Galvanized pipes are widely used. In addition to being used as pipeline pipes for general low-pressure fluids such as water, gas, and oil, they are also used as oil well pipes and oil pipelines in the petroleum industry, especially offshore oil fields, oil heaters, condenser coolers, coal distillation and washing oil exchangers for chemical coking equipment, as well as pier piles and support frames for mine tunnels.

Ductile iron pipe is a type of cast iron pipe. The quality requirement is that the spheroidization level of cast iron pipe should be controlled at level 1-3 and the spheroidization rate should be greater than 80%, so the mechanical properties of the material itself are well improved, with the essence of iron and the performance of steel. The metallographic structure of ductile iron pipe after annealing is ferrite plus a small amount of pearlite, with good mechanical properties, excellent anti-corrosion performance, good ductility, good sealing effect, easy installation, and mainly used for water supply, gas transmission, oil transmission, etc. in municipal and industrial and mining enterprises
 

 

SHANDONG BAOTAI METAL MATERIALS GROUP CO.,LTD was Located in Jinan, the capital of Shandong Province. Mainly engaged in stainless steel, carbon
steel, galvanized steel, PPGI, PPGL, copper, aluminum. Our team has focused on the steel industry for 15 years. The company has
established long-term close cooperative relations with well-known domestic steel companies. At the same time, the company's annual
spot reserve exceeds 1000,000 tons, so we can guarantee a short delivery time. Baotai Steel provides services for large
enterprises such as domestic government construction projects, Chinese listed companies, and state-owned enterprises. High-quality
products, low prices, and high-quality services are highly praised by customers. Customers from various countries have signed
agency agreements with Baotai Steel and become Baotai Steel's agents. Baotai Steel's service team is online 24 hours a day to
provide you with professional and high-quality services. At the same time, Baotai Steel also adheres to the concept of win-win,
customer-centric, and looks forward to becoming your trustworthy and high-quality enterprise.

Q1: What is your MOQ?
A: Usually our MOQ is one container, but it is different for some items, please contact us for details.

Q2:What is your terms of payment?
A:We usually accept T/T in advance, L/C for large sum.If you prefer other payments terms, please discuss.

Q3:What is your delivery time?
A:For products in stock, we can ship it within 7 days after receiving the deposit. For custom order, production time is 15-30 workdays after received the deposit.

Q4:How could you guarantee your products?
A:Mill Test Certification is supplied with shipment, We also accept and support the third-party inspection.We also could issue the warranty to customer to guarantee the quality.

Q5: Will all costs be clear?
A:Our quotation is easy to understand and will not incur any additional costs.