SINO EAST SOLAR is one of the leading manufacturers of scaffolding related products in China. Located in Tianjin Industrial Area. Our factory area is 65000 square meters with annual steel production capacity reaching 500,000MT.

 Our company has handled in the scaffolding manufacturing for many years. Over the years’ technical capabilities and commitment to quality have enabled us to build a broad client base around the world.

Our main products are scaffolding tubes, steel planks, steel prop, scaffold frame, scaffolding ladder, adjustable base jack and related products.

Our company products are exported to Australia,America,Middle east,Africa,South America,Southeast Asia and other countries and regions.

SINO EAST STEEL GOROUP has been certified under ISO 9001:2008, We can supply you the best quality of scaffolding products.And we lead the whole scaffold industry.

 Our company follows a policy of "customers first, to strive for progress," business philosophy, the "customers first" principle for the majority of customers with quality service. We sincerely would like to establish a mutually beneficial business relationship with clients from all over the world in long run.

“BUILD YOU LIFE”  is our mission .

Today let us introduction the steel tube , the steel tube have many kinds, there are carbon steel ,galvanized steel pipe, hot dipped galvanized steel pipe,seamless steel pipe and so on. Now let see the carbon steel profile firstly.

Carbon steel pipe is made of steel ingot or solid round steel by perforation, and then is made by hot rolling and cold rolling or cold dialing carbon steel pipe has an important position in the steel pipe industry in China

Hot rolled carbon steel pipe is divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe alloy steel pipe stainless steel pipe petroleum cracking pipe geological steel pipe and other steel pipes

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

General 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 steel hot rolled or cold rolled. 10, 20 and other low carbon steel made of seamless pipe is mainly used for fluid conveying pipeline. 45, 40Cr and other medium carbon steel made of seamless pipe to manufacture machine parts, such as cars, tractors, force parts. Generally used carbon steel pipe to ensure the strength and flattening test. Hot rolled steel pipes are delivered in hot rolled or heat treated state; Cold rolling is delivered in heat treatment condition.

The raw material of carbon steel tube is round tube billet, the round tube embryo is cut and processed by the cutting machine, the length of the billet is about 1 meter, and the billet is sent to the furnace to heat by the conveyor belt, the temperature is about 1200 degrees Celsius, the fuel is hydrogen or acetylene furnace temperature control is the key problem. The most common piercing machine is the conical roller piercing machine. This piercing machine has high production efficiency, good product quality, large diameter expansion, and can wear a variety of steel perforations. After the circular tube billet has been three rolls diagonal rolling continuous rolling or extrusion extrusion, the diameter should be removed from the tube Sizing mill by taper drill bits high-speed steel into embryo punching and forming steel pipe steel pipe diameter by sizing mill length to determine the bit diameter steel pipe after sizing, into the cooling tower, by water spray cooling, steel pipe after cooling, will be after straightening straightening steel pipe by the conveyor belt to the metal detection machine (or water pressure experiment) for internal inspection If there are cracks, bubbles and other problems in the steel pipe, it will be detected after the quality inspection of the steel pipe, and through strict manual selection of the steel pipe quality inspection, with paint spray number specification production batch number and so on and hoisted into the warehouse by the crane.

Carbon steel pipe is made with steel ingot or billet solid pipe through perforation, then through hot rolling and cold rolling or cold dialing carbon steel pipe has an important position in Chinese steel pipe industry according to incomplete statistics, our country currently exists more than 240 enterprises of carbon steel pipe production and more than 250 sets of carbon steel pipe units, annual capacity of about more than 4.5 million tons from caliber,& LT; φ76, 35%,< φ159-650, accounting for 25% from the variety, general purpose tube 1.9 million tons, accounting for 54%; 760,000 tons of petroleum steel pipe, accounting for 5.7%; Hydraulic prop precision pipe 150,000 tons, accounting for 4.3% stainless pipe bearing pipe auto pipe 50,000 tons, accounting for 1.4%

Cold-drawn (rolled) carbon steel seamless steel tube: round tube billet → heating → piercing → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold-rolled) → billet → heat treatment → straightening → hydrostatic test (flaw detection) → marking → storage

Carbon steel seamless steel pipe is divided into hot rolled (extruded) seamless steel pipe and cold drawn (rolled) seamless steel pipe because of its different manufacturing technology. Cold drawn (rolled) pipe is divided into two types: round pipe and special-shaped pipe.

If you interested in the steel pipe and want known more, welcome contact me.