方管，顧名思義就是方形的鋼管，一般是由帶鋼或者是鋼板卷制焊接而成的方管。大口徑的方管有直縫方管和無縫方管。直縫的方管一般是由帶鋼或者是鋼板焊接卷制的。無縫的方矩管是由無縫管做母材，通過改拔或者是冷拔進行生產(chǎn)，也就是所謂的圓變方。

　　Square tube, as the name suggests, is a square steel pipe, usually made of steel strip or steel plate rolled and welded into a square tube. Large caliber square tubes include straight seam square tubes and seamless square tubes. Straight seam square tubes are generally made of welded coils of strip steel or steel plates. Seamless square tube is made of seamless tube as the base material and produced by drawing or cold drawing, which is called circular to square.

　　生產(chǎn)工藝

　　Production process

　　方管是空心為方形的橫截面輕質(zhì)薄壁鋼管，又稱鋼制冷彎曲型材?，F(xiàn)在非常常見的材質(zhì)是Q235，其中Q235又分BCD等等級，有縫方管是以Q235熱軋或冷軋帶鋼或卷材為基礎，然后通過高頻焊接成形，這種方式只適用于普通要求的方管，通常性能更好，密封性更強的方管，我們通常采用無縫圓管，冷軋形成，相對于冷軋還有熱軋方管， 熱軋超厚壁方管以壁厚增厚而聞名，其硬度值根據(jù)硬度檢測程度進行測量。

　　Square tube is a lightweight thin-walled steel pipe with a hollow square cross-section, also known as a steel refrigeration bending profile. The most common material now is Q235, which is divided into BCD and other grades. Welded square tubes are based on Q235 hot-rolled or cold-rolled steel strips or coils, and then formed by high-frequency welding. This method is only suitable for ordinary square tubes with better performance and stronger sealing. We usually use seamless round tubes, cold-rolled to form. Compared with cold-rolled and hot-rolled square tubes, hot-rolled ultra thick walled square tubes are famous for increasing wall thickness, and their hardness values are measured according to the degree of hardness testing.

　　02應 用

　　02 Application

　　鋼結構

　　steel structure

　　有縫方管通常可以通過鋼板焊接而成，通常用于鋼結構等，可塑性是指金屬材料在負載的情況下，能夠減慢對金屬形態(tài)產(chǎn)生可塑性變形（永久變形）而不破壞的能力。

　　Welded square tubes are usually made by welding steel plates and are commonly used in steel structures. Plasticity refers to the ability of metal materials to slow down the plastic deformation (permanent deformation) of the metal form under load without damage.

　　機械制造

　　Mechanical manufacturing

　　由于其結構穩(wěn)定、剛度大、重量輕等特點，常用于制造機械設備等框架、支架、軸承座等部件，它可以提高良好的支撐和保護，使機械設備能夠正常運轉并承受一定的荷載。

　　Due to its stable structure, high stiffness, and light weight, it is commonly used in the manufacturing of frames, brackets, bearing seats, and other components of mechanical equipment. It can improve good support and protection, enabling mechanical equipment to operate normally and withstand certain loads.

　　橋梁建設

　　Bridge construction

　　橋梁是連接兩個地點的重要交通設施，它在橋梁的建設中發(fā)揮重要作用，常用于制作橋梁的梁，墩柱和橋梁面板等部件，它具有較高的抗彎強度和抗壓能力，能夠有效的承受橋梁的自重和荷載，此外，還具有良好的防腐性質(zhì)，能夠抵御惡劣的環(huán)境條件，延長橋梁使用壽命。

　　A bridge is an important transportation facility that connects two locations and plays a crucial role in bridge construction. It is commonly used to make components such as beams, piers, columns, and bridge panels. It has high flexural strength and compressive capacity, and can effectively withstand the weight and load of the bridge. In addition, it has good anti-corrosion properties, which can withstand harsh environmental conditions and extend the service life of the bridge.

　　公路護欄

　　highway guardrail

　　公路護欄和欄桿是保護交通安全的重要設施，它在其中扮演者重要角色，用于制造公路護欄和欄桿的立柱和橫梁，它具有較高的強度和剛度，能夠有效的抵擋車輛的沖擊和碰撞，保護行人和車輛的安全，此外，還具有良較好的可塑性和耐腐蝕性，能夠適應不同的氣候條件和環(huán)境要求。

　　Highway guardrails and railings are important facilities for protecting traffic safety, playing an important role in them. They are used to manufacture the columns and beams of highway guardrails and railings, which have high strength and rigidity, can effectively resist the impact and collision of vehicles, protect the safety of pedestrians and vehicles. In addition, they also have good plasticity and corrosion resistance, and can adapt to different climatic conditions and environmental requirements.

　　方管廣泛用于建筑、機械制造、鋼鐵建設等項目，在造船、太陽能發(fā)電支架，鋼結構工程、電力工程、電廠、農(nóng)業(yè)和化學機械、玻璃幕墻、汽車底盤、機場、鍋爐建造、高速路欄桿、房屋建筑、壓力容器、石油儲罐、橋梁、電站設備、起重運輸機械及其他較高載荷的焊接結構件也有大量使用。

　　Square tubes are widely used in construction, machinery manufacturing, steel construction and other projects. They are also widely used in shipbuilding, solar power generation brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automotive chassis, airports, boiler construction, highway railings, building construction, pressure vessels, oil storage tanks, bridges, power plant equipment, lifting and transportation machinery, and other welded structural components with high loads.

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