Introduce different type and type of mild steel pipe

Introduce different type and type of mild steel pipe

Steel pipe is open on both ends and has a hollow section, the length and the surrounding larger steel, specifications (such as the diameter or length) with dimension and wall thickness, says can be used in the pipeline, thermal technology equipment, industrial machinery, petroleum geological exploration, containers, chemical industry, and special purpose. In terms of steel prices, steel mills ex-factory prices continued to rebound. As of last weekend, the mainstream steel product factory price, the continuation of a week before the rally, gains from widened. Long products varieties increase higher than the flat material, proportion Gao Changcai companies such as jisco, steel prices many times recently. "chase after go up." Seamless steel tube is to point to by the whole piece of metal on the surface without seam steel pipe, according to the production methods can be divided into hot rolling pipe, cold rolled, cold drawn tubes, extruded tube, according to the cross section shape can be divided into round and shaped two kinds, according to the different wall thickness can be divided into thick wall pipe and thin wall pipe. Seamless tube diameter of 650 mm (hole diameter tube), minimum diameter is 0.3 mm (capillary), mainly used for petroleum geological exploration tube, petroleum chemical industry with cracking pipe, boiler tube, bearing and auto, aviation with high precision steel tube structure, etc.

Simple straight seam steel pipe forming process and USES

Welded steel pipe refers to the steel belt or steel plate bending deformation shapes such as round, square, jointed on the surface of steel pipe welding. According to different welding methods can be divided into electric arc welding tube, high frequency or low frequency electric resistance welded pipe and gas welding tube, furnace welding pipe, bondi pipe, etc., according to the weld shape can be divided into straight seam welded pipe and spiral welded pipe. In terms of cost, the price of iron essence pink rose slightly, coal prices basically stable, the sea freight rebound, scrap steel price rise is bigger. Data show that by the end of last week, the major domestic iron ore mines are price is 1160 yuan/ton, compared with the previous week rose 25 yuan/ton, or 2.42%. Welded steel tube used in oil drilling and machinery manufacturing, etc., the furnace pipe can be used as water, gas pipe and so on, the DSAW steel pipe used in high pressure oil and gas transportation, etc.; Spiral welded pipe used in oil and gas transportation, pipe pile, piers, etc. Welded steel pipe seamless steel tube of low cost, high production efficiency. Last week, China's major cities long plank material and total inventory is 14.078 million tons, 515000 tons, or 3.70% drop in the previous week. The long products 5.8797 million tons of inventory, weeks dropped 450000 tons, or 7.64%. Total inventory decline continues to expand, and plate 8.1983 million tons, week dropped 66000 tons. Rebar inventories hit a year low key cities for the society, for the first time is less than 5 million tons.

High frequency straight seamless steel pipe up.the welding manufacturing

Straight seam steel pipe to periodically check and test the reliability of the grounding system. DSAW steel pipe of high frequency welding is using ac electrical skin effect and proximity effect, steel (strip) after rolling forming, the formation of a cross section of broken circular tube billet, inside the tube billet near the center of induction coil rotating around one or a set of impedance (magnet) and impedance and pipe opening form a electromagnetic induction loop, under the action of skin effect and proximity effect, the pipe opening edges produce powerful and concentrated heat effect, make the weld edge rapidly heated to required after roller extrusion temperature, welding metal molten state to realize the joint between the crystal, after cooling to form a firm butt weld. To ensure that the fluid contained in the straight seam steel pipe's largest particle does not exceed the maximum security of pump a particle diameter standard. Straight seam steel pipe in high frequency is high frequency welding process  Pipe unit. The highest allowed 2 don't more than the pump inlet pressure Make use of pressure. Straight seam steel pipe ground demands in accordance with local laws and regulations and the requirements of the scene of some of the special requirements. Straight seam welded steel pipe pneumatic diaphragm pump through the reciprocating diaphragm deformation caused by volume changes in the volume of pumps, pneumatic diaphragm pump with pressure air as power. High frequency welded pipe units are usually made of roll forming, high frequency welding, extruding, cooling and sizing, flying saw cutting parts, such as the front of the unit is equipped with the loading loop, turned back end of the unit is equipped with steel frame; Electrical parts are mainly high frequency generator, dc excitation generator and instrument automatic control device, etc. Straight seam steel pipe, according to the need to use enough large cross-sectional area of the wire 4 an explosion caused by spark may cause personal casualty and property loss. 11 when flammable and poisonous liquid. High frequency welding is a kind of induction (or contact pressure welding) welding, it need to weld filler, no welding spatter, narrow welding heat affected zone, weld moulding beauty, weld merit such as mechanical performance is good, so is widely used in steel production. Straight seam steel pipe is made by high frequency welding machine to certain specifications of the long bar steel coil into circular tube shape and straight seam welding and straight seam steel pipe. Material of welded steel pipe are mainly: low carbon steel and sigma acuities were 300 n/s was, sigma acuities were 500 n/s was of low alloy steel and other steel products.

If you would like to know more about this,pls contact:hunan great steel pipe co.,ltd