Kunming seamless tube manufacturer, Kunming seamless tube price, seamless tube, Kunming seamless tube manufacturer wholesale
Kunming seamless pipe price * * * Manager Zhong
Seamless pipe is a kind of Hollow section . Strip without joints around steel products 。
seamless steel tube
one Seamless pipe for structure (GB/T8162-2008) is a seamless pipe for general structure and mechanical structure. 2. Seamless pipe for fluid transportation (GB/T8163-2008) is a general seamless pipe used to transport water, oil, gas and other fluids.
3. Seamless tube for low and medium pressure boiler（ GB3087-2008 ）It is used to manufacture superheated steam pipes, Kunming seamless pipe manufacturers, superheated steam pipes, large smoke pipes, small smoke pipes and arch brick pipes for boiling water pipes and locomotive boilers of various structures High quality carbon structural steel Hot rolled and cold drawn (rolled) seamless tubes.
4. Seamless tube for high-pressure boiler（ GB5310-2008 ）It is used to manufacture high pressure and above Water tube boiler High quality for heating surface carbon steel , alloy steel and stainless heat resistant steel seamless pipe.
5. High pressure seamless pipe for fertilizer equipment（ GB6479-2000 ）It is a high-quality carbon structural steel and alloy steel seamless pipe suitable for chemical equipment and pipes with working temperature of - 40~400 ℃ and working pressure of 10~30Ma.
6. Seamless pipe for petroleum cracking（ GB9948-2006 ）It is applicable to furnace tubes, heat exchangers and seamless pipes of pipelines in petroleum refineries.
7. Kunming seamless steel pipe manufacturer (YB235-70) for geological drilling. The price of Kunming seamless steel pipe is the steel pipe used by the geological department for core drilling, which can be divided into drill pipe, drill collar, core pipe, casing and sedimentation pipe according to the purpose.
8. Seamless pipe for diamond core drilling (GB3423-82) is a seamless pipe for drill pipe, core pipe and casing used for diamond core drilling.
9. Oil drilling pipe (YB528-65) is a seamless pipe used for thickening inside or outside both ends of oil drilling.
Tube
10. Marine Carbon Steel Seamless Pipe (GB5312-85) Materials and Welding Specification of China Classification Society - China Classification Society (CCS)
Det Norske Veritas (DNV) specifications - Det Norske Veritas (DNV)
Lloyd's Register (LR) Code - Lloyd's Register (LR)
GL Rules - GL
American Bureau of Shipping (ABS) Code - American Bureau of Shipping (ABS)
BV Rules - BV
RINA Rules - RINA
Japan Classification Society (NK) Specifications - Japan Classification Society (NK)
It is a seamless carbon steel pipe used for manufacturing Class I pressure pipe system, Class II pressure pipe system, boiler and superheater. Kunming seamless pipe manufacturer, the working temperature of carbon steel seamless pipe wall shall not exceed 450 ℃, and the working temperature of alloy steel seamless pipe wall shall exceed 450 ℃.
11. Seamless tube for automobile half axle sleeve (GB3088-82) is a high-quality carbon structural steel and alloy structural steel used to manufacture automobile half axle sleeve and axle tube of drive axle housing Hot rolled seamless pipe 。
12. High pressure fuel pipe for diesel engine (GB3093-86) is used to manufacture high pressure fuel pipe for diesel engine injection system Cold drawn seamless pipe 。
13. Seamless tubes with accurate inner diameter for hydraulic and pneumatic cylinders (GB8713-88) are cold drawn or cold rolled with accurate inner diameter for manufacturing hydraulic and pneumatic cylinders Accurate seamless pipe 。
14. Cold drawn or cold rolled accurate seamless tube (GB3639-83) is a kind of accurate cold drawn or cold rolled seamless tube with high dimensional accuracy and good surface finish for mechanical structures and hydraulic equipment. Kunming seamless pipe manufacturer, Kunming seamless pipe price, select accurate seamless pipe manufacturing mechanical structure or hydraulic equipment.
15. For structure Stainless steel seamless pipe (GB/T14975-2002) is a hot rolled (extruded, expanded) and cold drawn (rolled) seamless tube made of stainless steel for corrosion resistant pipes, structural parts and parts widely used in chemical, petroleum, textile, health, food, machinery and other industries.
16. Stainless steel seamless pipe for fluid transportation（ GB/T14976-2002 ）It is a hot rolled (extruded, expanded) and cold drawn (rolled) seamless tube made of stainless steel used for conveying fluid.
17. Profiled seamless pipe is a general term for seamless pipes of other cross section shapes except round pipes. The price of Kunming seamless pipe can be divided into profiled seamless pipe with equal wall thickness (code D), profiled seamless pipe with unequal wall thickness (code BD), and profiled seamless pipe with variable diameter (code BJ) according to the different shapes and sizes of steel pipe sections. Profiled seamless tubes are widely used in various structural parts, tools and mechanical parts.
18. Seamless steel pipe for low-temperature pipeline (GB/T18984-2003) is used for - 45 ℃~- 195 ℃ Low temperature pressure vessel Seamless steel tubes for pipes and low temperature heat exchanger pipes
Generally, seamless pipes are 10, 20, 30, 35, 45 and other high-quality pipes Carbon structural steel 16Mn, 5MnV and other low alloy structural steels or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other bonded steels are hot rolled or cold rolled. 10. 20 etc mild steel The seamless pipes manufactured are mainly used for fluid transmission pipelines. Seamless pipes made of medium carbon steel such as 45 and 40Cr are used to manufacture mechanical parts, such as stressed parts of automobiles and tractors. Kunming seamless pipe price, generally seamless pipe to ensure strength and flattening test. Hot rolled steel pipe Hot rolled condition Or delivery in heat treatment state; Cold rolling is delivered in heat treatment state. Seamless tubes for low and medium pressure boilers: used to manufacture various low and medium pressure boilers, superheated steam tubes, boiling water tubes, water-cooled wall tubes and superheated steam tubes, large smoke tubes, small smoke tubes and arch brick tubes for locomotive boilers.
Seamless tubes are hot-rolled or cold-rolled (drawn) with high-quality carbon structural steel. It is mainly made of 10 # and 20 # steel. In addition to ensuring chemical composition and mechanical properties Hydrostatic test , crimping, flaring, flattening and other tests. Hot rolling shall be delivered in hot rolling state, and cold rolling (rolling) shall be delivered in heat treatment state.
2.1 Domestic seamless pipes supplied according to chemical composition and mechanical properties, such as 10, 15, 20, 25, 30, 35, 40, 45 and 50 # steel The chemical composition of shall comply with the provisions of GB/T699-88. Imported seamless pipes shall be inspected according to relevant standards specified in the contract. The chemical composition of 09MnV, 16Mn and 15MnV steels shall comply with GB1591-79.
2.2 For specific analysis method, please refer to relevant parts of GB223-84 Methods for Chemical Analysis of Iron, Steel and Alloy.
2.3 For analysis deviation, please refer to GB222-84 Allowable Deviation of Chemical Composition of Samples and Finished Products for Chemical Analysis of Steel.
3.1 Domestic seamless pipes supplied according to the performance of the organization, Kunming seamless pipe manufacturers, Kunming seamless pipe prices, ordinary carbon steel is manufactured according to Class A steel in GB/T700-88 (but it must ensure that the sulfur content does not exceed 0.050% and the phosphorus content does not exceed 0.045%), and its mechanical properties should meet the values specified in the table of GB8162-87.
3.2 The domestic seamless pipes supplied according to the hydrostatic test must guarantee the hydrostatic test specified in the standard.
3.3 The physical property inspection of imported seamless pipes shall be carried out according to the relevant standards specified in the contract.
2. Usage 2.1 Seamless pipes are widely used. Seamless pipes for general purposes are composed of Ordinary carbon structural steel , low alloy structural steel or alloy structural steel rolling, with a large output, is mainly used as pipes or structural parts for conveying fluid.
2.2. According to different purposes, there are three types of supply: a. Supply according to chemical composition and mechanical properties; b. Supply according to mechanical properties; c. Supplied as per hydrostatic test. The steel pipes supplied according to class a and b, if used to bear the liquid pressure, Kunming seamless pipe manufacturers, Kunming seamless pipe prices, also need to carry out hydrostatic test.
2.3 Seamless pipes for special purposes Seamless tube for boiler , geological seamless pipe and petroleum seamless pipe, etc.
3. Category
3.1 Seamless steel pipe can be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe, extruded pipe, etc. according to different production methods.
3.2 According to the shape classification, there are circular pipes and special-shaped pipes. Special tube removal Square tube In addition to rectangular tubes, there are elliptical tubes, semicircular tubes, triangular tubes, hexagonal tubes, convex tubes, quincunx tubes, etc.
3.3 According to different materials, it can be divided into ordinary carbon structural pipes, low alloy structural pipes High quality carbon structural pipe Alloy structure pipe, stainless steel pipe, etc.
3.4 According to the special purpose, there are boiler pipes, geological pipes, oil pipes, etc
As of February 10, 2017, the market price of 20 # seamless tube 108 * 4.5 seamless tube was 4115 yuan/ton (tax included), up 0.46% from the price at the beginning of the week, and seamless tube fluctuated upward this week.
2、 Kunming seamless pipe manufacturer, analysis of influencing factors
In terms of upstream, the prices of Kunming seamless tube manufacturers' blanks rose this week, and the orders received are saturated. The shipments are mostly orders made years ago, and the actual transaction price is mostly a single discussion. No new orders are urgently received. It is expected that normal price negotiations will resume after the Lantern Festival. Shandong 20 # Weigang, Luli, Jiangxin and Sande markets quoted 3450 yuan/ton, 3460 yuan/ton, 3500 yuan/ton and 3560 yuan/ton respectively, up 130-150 yuan/ton from the same period last week. In terms of tube mills, Linyi tube mill rose, with a cumulative increase of 70-100 yuan/ton, and the factory price of medium hot rolled tubes was 3970-4000 yuan/ton. On the market side, with the strong shock of goods this week, the prices of steel billets and tube billets have risen, leading to a slight increase in the market prices of seamless tubes. However, since this week was the week before the resumption of business by traders, the market has not yet been fully started, the market demand has not improved much, downstream customers are still resting, the deal is relatively cold, and merchants are mainly wait-and-see, unwilling to adjust prices. Since Wednesday, with the rise of upstream raw material prices, the market price has been slightly boosted. Wuxi seamless pipe market has gradually become active, and the shipment situation has improved. And the merchants are full of a certain amount of inventory, and how much they go out and how much they go in every day.
3、 Kunming seamless pipe price, future forecast
To sum up, this week is the week before the start of construction after the festival. The market demand has not been released, and the turnover is not optimistic. Most downstream construction sites start construction after the Lantern Festival, and the market will actually get on track next week. In addition, the inventory is sufficient, and the willingness to replenish is not obvious. Next week, the downstream construction sites will be started one after another, and the price of seamless pipes in Kunming may rise slightly.
Yunnan Yande Trading limited company It is a large private sole proprietorship enterprise specializing in the production and operation of steel materials and a large circulation enterprise specializing in seamless steel pipes. Now the company sells seamless steel pipes, boiler pipes, alloy pipes Liquid pipes and other pipes. Now the inventory is 20000 tons and thousands of models. It is a large seamless steel pipe supply base in China. At present, the company has more than 8000 tons of spot goods and more than 600 varieties for you to choose from. Our sales network covers more than 20 provinces and cities. For more than ten years, through the hard work of all staff and the friendly cooperation of brother companies, our company has been able to accurately grasp the information and opportunities in the uncertain field of the steel circulation market. With rapid speed, our company has been constantly accumulating and improving, and has been constantly growing, and has won the trust of customers with good services and high-quality products.
The company has been selling various specifications and uses produced by Tianjin Steel Pipe Plant, Chengdu Steel Plant, Baotou Steel Group, Smelting Steel Group, Baosteel Group and other major steel plants in the form of spot agency for many years. Standard seamless steel pipes and a large number of imported alloy pipes and seamless steel pipes. The company has sufficient inventory resources for a long time. Based on the national market, it serves customers all over the country, and has formed an annual sales capacity of 100000 tons of various pipes. The company adheres to the business philosophy of "honesty, humility and service first". We are willing to work together with our customers to develop and create brilliance with unified services on this basis!
The company's main business: high, medium and low pressure boiler tubes; Large * * * and special materials, special specifications, special uses, thin and thick wall seamless tubes and various domestic and imported alloy tubes for petroleum, chemical, textile, hydraulic, health, electric heating, * * * machinery, hydraulic props, boiler instruments, decoration, construction and other industries. The materials are 10 #, 20 #, 35 #, 45 #, 27SiMn, 16Mn, 15CrMo, 35CrMo, 12CrMoV, and various seamless steel pipes that can be purchased and sold on a commission basis for users, and can be jointly sold to exchange and adjust the backlog.
