Landline:+86 317 3205655  News
Email: jackie@hbjushun.com  Contact Us
    Home >> NEWS
    NEWS

By carbon steel seamless pipe cross-section can be divided into different shapes

更新日期:2013-10-10  浏览:1499
 
From the point of view of international and domestic markets, seamless pipe (including OCTG) existing production capacity already exceeds demand. Therefore, the future should focus on the ability to give full play to the existing units, the development of high-strength grade, high combat damage, high resistance to corrosion of oil pipes, high pressure boiler tubes and cylinders pipe and other products.
Seamless (Seamless tube) is a kind of hollow section, no seams around the long bar of steel.
From the point of view of international and domestic markets, seamless (including OCTG) existing production capacity already exceeds demand.Therefore, the future should focus on the ability to give full play to the existing units, the development of high-strength grade, high combat damage, high resistance to corrosion of oil pipes, high-pressure boiler tubes and cylinders pipe and other products.
One, the seamless process
Tube - Inspection - Skinning - Inspection - Heating - piercing - pickling - grinding - dry lubricant - welding head - drawing - solution treatment - Pickling - Pickling passivation - test - cold - to oil - cut - dry - in polished - polished outside - test - identification - product packaging
Second, the classification of seamless
1 structure seamless pipe (GB/T8162-1999) is used for general structure and mechanical structure of seamless pipe.
2 fluid seamless pipe (GB/T8163-1999) is used for conveying water, oil, gas and other fluids generally seamless.
3 low-pressure boiler seamless pipe (GB3087-1999) is used to manufacture various structural low and medium pressure boiler superheated steam pipes, boiling water and superheated steam locomotive boiler tubes, opium pipe, small pipe and brick arch effective high-quality carbon structural steel, hot-rolled and cold drawn (rolled) seamless.
4 high-pressure boiler seamless pipe (GB5310-1995) and above is used to manufacture high pressure water tube boiler heating surface with high-quality carbon steel, alloy steel and heat-resistant stainless steel seamless pipe.
5 fertilizer equipment, high pressure seamless pipe (GB6479-2000) is applied to the working temperature of -40 ~ 400 ℃, working pressure of 10 ~ 30Ma of chemical equipment and pipeline quality carbon structural steel and alloy steel seamless pipe.
6. Petroleum cracking seamless pipe (GB9948-88) is applied to the oil refinery furnace tubes, heat exchangers and pipe seamless.
7 geological drilling carbon steel seamless pipe (YB235-70) is a core drilling for geological department using carbon steel seamless pipe, use can be divided into the drill pipe, drill collars, cores, sleeves and precipitation tubes.
8 diamond core drilling seamless pipe (GB3423-82) is used for diamond core drilling drill, core rods, seamless pipe casing.
9 oil drilling seamless pipe (YB528-65) is used to thicken the oil drilling within or outside the thick ends of seamless pipe. carbon steel seamless pipe threading points and not two, Threading Pipe Fittings links, no threading methods and tools useful butt joint connection.
10 ships with carbon steel seamless pipe (GB5213-85) is manufactured Class I pressure vessels piping, Ⅱ grade pressure piping, boilers and Superheater carbon steel seamless pipe. Carbon steel seamless pipe wall temperature does not exceed 450 ℃, alloy steel seamless pipe wall temperature exceeds 450 ℃.
11 automobile axle casing seamless pipe (GB3088-82) is manufactured automobile axle tube and axle axle shaft tubes of high-quality carbon structural steel and alloy steel hot-rolled seamless tube.
12 diesel engine with high-pressure pipe (GB3093-86) is a high-pressure diesel injection system manufacturing cold drawn seamless tubes.
13 hydraulic and pneumatic cylinder with precision internal diameter seamless pipe (GB8713-88) is a manufacturer of hydraulic and pneumatic cylinder with a diameter size with precision cold drawn or cold rolled precision seamless tube.
14 Cold-drawn or cold rolled precision seamless pipe (GB3639-83) is used for mechanical structure, hydraulic equipment, high dimensional accuracy and good surface finish of cold drawn or cold rolled precision seamless tube. Precision seamless tube manufacturing mechanical or hydraulic equipment, etc., can greatly reduce mechanical processing time, improve material utilization, and help to improve product quality.
15 structure with stainless steel seamless pipe (GB/T14975-1994) is widely used in chemical, petroleum, textile, medical, food, machinery and other industrial corrosion resistant pipes and structural parts and components made of stainless steel hot-rolled ( extrusion, expansion) and cold drawn (rolled) seamless.
16 fluid transport stainless steel seamless pipe (GB/T14976-1994) is used for conveying fluid made of stainless hot-rolled (extrusion, expansion) and cold drawn (rolled) seamless.
17 shaped seamless pipe is in addition to other than the cross-sectional shape of the seamless pipe in general. By carbon steel seamless pipe cross-section can be divided into different shapes and sizes such as wall shaped seamless (code D), wall thickness ranging shaped seamless (code-named BD), variable diameter shaped seamless (code-named BJ). Shaped seamless widely used in various structural parts, tools and mechanical parts. And tube compared Pipes generally have a greater moment of inertia and section modulus, a greater torsional bending capability can greatly reduce the structural weight, saving steel.
Third, the seamless features
1 smaller diameter.
2 high precision can do small quantities of raw
3 cold drawn products, high precision, good surface quality.
4. Carbon steel seamless pipe cross area is more complicated.
5. Carbon steel seamless pipe superior performance, the metal is relatively dense
To improve carbon steel seamles s pipe corrosion resistance, the general carbon steel seamless pipe galvanized. Galvanized carbon steel seamless pipe of hot-dip galvanized and electro-galvanized two kinds, hot dip galvanized thick galvanized, electro-galvanized, low cost, surface is not very smooth. Oxygen pipe : as steelmaking oxygen tube, usually with small diameter seamless pipe welding Carbon Steel , specifications for 3/8-2 inch eight kinds. With 08,10,15,20 or 195-Q235 made into a strip, in order to prevent corrosion, something for aluminized.
Most of the old house are used galvanized pipe, and now gas, heating with the kind of iron pipe is galvanized pipe, galvanized pipe as the water pipes, the use of a few years, a large amount of rust inside the tube, not only out of the yellow water pollution ware, and mixed with non-smooth inner breeding of bacteria, corrosion caused by high levels of heavy metals in water, serious harm to human health. Sixties and seventies, the international developed countries have started to develop new pipe, galvanized pipe and another disabled. Chinese Ministry of Construction and other four ministries issued a document specifically disabled from 2000 onwards galvanized pipe, new district currently has rarely used the cold water pipe galvanized pipe, and some residential hot water pipes using a galvanized pipe. [Edit this paragraph] galvanized carbon steel seamless pipe use
Often said that the galvanized pipe, galvanized pipe use now gas, heating with the kind of iron pipe is galvanized pipe, galvanized pipe as the water pipes, the use of a few years, a large amount of rust inside the tube, not only out of the yellow water pollution ware, and mixed with non-smooth inner breeding of bacteria, corrosion caused by high levels of heavy metals in water, serious harm to human health. Sixties and seventies, the international developed countries have started to develop new pipe, galvanized pipe and another disabled. Chinese Ministry of Construction and other four ministries issued a document specifically disabled from 2000 onwards galvanized pipe, new district currently has rarely used the cold water pipe galvanized pipe, and some residential hot water pipes using a galvanized pipe. Stainless steel production technology, has the following production steps: [1] a. Round preparation; b. Heating; c. Hot punch; d. Cutting head; e. Pickling; f. Grinding; g. Lubrication; h. Cold processing; i. Degreasing; j. Solution heat treatment; k. Straightening; l. Pipe cutting; m. Pickling; n. Finished product inspection. Can only provide general process, more detailed confidential belonging to each manufacturer
 
Circular carbon steel seamless pipe weight: formula: kg / m = (Od - Wt) * Wt * 0.02466 Od is the diameter of which is the thickness Wt
 
How to calculate square tube / (rectangular tube) as well as the support of each tube heavy price? 
"The width of the four faces sum (circumference) / 3.14-wall" * thickness * 0.02466 * m = number of single weight
 
The price per ton * support weight = each tube unit price
Stainless steel plate thickness width Χ Χ long Χ7.93 as 2.0Χ1.22Χ2.44Χ7.93 = 47.2kg / Zhang 
Stainless carbon steel seamless pipe (OD - Wall Thickness) Χ wall Χ0.02491 if (57-3.5) Χ3.5Χ0.02491 = 4.66kg / m 
Stainless steel round bar diameter Χ diameter Χ0.00623 as 18Χ18Χ0.00623 = 2.02kg / m 
Stainless steel angle side length Χ side length Χ7.8Χ0.000198 as 40Χ40Χ7.8Χ0.000198 = 2.47kg / m (width + side edge width - edge thickness) Χ edge thickness Χ0.00793 such as (40 +40-3) Χ3Χ0.00793 = 1.83 Kg / m 
Stainless steel thickness Χ W Χ0.00793 as 8Χ80Χ0.00793 = 5.08kg / m 
Stainless steel tube (edge width Χ4 ÷ 3.14-thickness) Χ thickness Χ0.02491 as (40Χ4 ÷ 3.14-3) Χ3Χ0.02491 = 3.58Kg / m 
Hexagonal-to-edge-to-edge Χ Χ0.0069 
Square steel edge width Χ edge width Χ0.00793 
In addition to the above plate length and width in meters, other specifications are in millimeters.
 
top
All Rights Reserved :GRANDE UNION PIPELINE & EQUIPMENT LT carbon steel seamless pipe | SSAW steel pipe | carbon steel elbow | About Us | Contact Ussitemap