Changsha Xiangjia Metal Materical Co., Ltd.

Seamless steel pipe  for boiler pipe: GB3087-1999 Boiler tube (GB3087-1999 GB5310-1995) Standard: GB3087-1999 GB5310-1995 Application: Used in the manufacture of water walls, economizers, reheaters, superheaters and steam pipes for boilers pipe with low and medium pressure, high pressure and above.   High pressure seamless steel pipe for boiler pipe: GB5310-95 (ST45.8-Ⅲ type) Boiler tube (GB5310-1995) Standard: GB5310-1995 Application: Used in the manufacture of water walls, economizers, reheaters, superheaters and steam pipes of high pressure and above pressure boiler pipe.

The "Policy of Accelerating the Reconstruction of Shanty Towns by the State Council" published by the government website on July put forward our country's goal of renovating 10 million various types shanty within five years. Which will improved the housing conditions of residents and the level of infrastructure and public service facilities. Shanty town reconstruction will have big demands on  seamless pipe , other steel products, cement, plywood etc.which will stimulate steel field and construction development. It is not only a major livelihood project, but also a major investment project. We believes that the transformation of shanty towns and the construction of new urbanization will be the “focus” of the iron and steel industry in the next few years, as well as the “life-saving straw” of the industry, which will bring vitality to the steel market.

  SSAW steel pipe   is welded after being bent and deformed into a round shape by a steel strip or steel plate. Materials of SSAW steel pipe: Q235A, Q23b, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb. Q345L, 245L, 290X, 42X, 46X, 70X, 80 SSAW steel pipe standard: GB/T9711.1-1997 (National standard), API -5L (American Petroleum Institute, also called pipeline steel pipe: PSL1 and PSL2), SY/T5040-92 (Spiral submerged arc welded steel pipe for piles) Changsha Xiangjia Metal Materical Co., Ltd.  the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel products in China. We specializes in manufacturing all kinds of steel pipe in various grades and sizes. Years of production experience and manufacturing facilities who have a capacity of 200,000 tons per annual will ensure the good quality and competitive duration of our products.

1. Adjusting the height of the vertical roller to improve the accuracy of  LSAW steel pipes  in producting; 2. Add some pads of different thickness under the lower roll bearing seat of LSAW steel pipe to adjust the accuracy; 3. If the device is pressed on the bottom of LSAW steel pipe, the accuracy can be adjusted by the press on the device; 4. For the frame of the LSAW steel pipe manufacturer, the single frame and their bases, different thicknesses should be added; 5. Choose the right bottom diameter of the lower rollers for frame. We are specializes in the production of spiral steel pipes, etc., has been strictly controlling in quality, and has been deeply supported and trusted by customers for many years.

The production process of large-diameter  welded pipe  is can be divided into the 3 types: 1. Large-diameter spiral steel pipe is made by hot-rolled steel coils and welded by spiral coiling. Because it is spiral weld, so it also called spiral welded steel pipe.  2. Large-diameter straight seam steel pipes are coiled and welded with hot-rolled steel coils and medium-thick plates. Because there is one or two straight seams on pipe, so it also called straight seam steel pipes. The process is divided into two types: 1. double-sided submerged arc welding process, most are large-diameter thick-wall welded pipe. 2.  high-frequency welding process, mainly are small-diameter thin-wall welded pipes. 3. Large-diameter coiled pipe, using medium and thick plates as raw material, coiled with a pipe rolling machine, rounded, and then submerged arc welding process, because its welding shape is like a T-shape, it is also called a T-shaped welded pipe. Changsha Xiangjia Metal Materical Co., Ltd.  the St

High-pressure boiler tubes are a kind of seamless steel pipes. Due to the high temperature working environment will have a large amount of water vapor, then the steel pipes will undergo oxidation and corrosion. That make boiler tubes have good corrosion resistance and organizational stability. GB 5310 high-pressure boiler tubes are mainly used to manufacture superheater tubes, reheater tubes, air guide tubes, main steam tubes, etc.. The low and medium pressure boiler tube the national standard 3087, and the high pressure boiler tube the national standard 5310. Usually, the hot-rolled tube of high-pressure boiler tube has an exterior range of 22-530mm, and a wall thickness of 20-70mm. The outer diameter of the cold drawn tube is 10-108mm, and the wall thickness ranges from 2--13mm. The steel grades of high-quality carbon structural steel for high-pressure boiler tubes are 20G, 20MnG, and 25MnG. The steel grades of alloy structural steel are 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12Cr

Petroleum casing is a large-diameter pipe that serves to fix oil and natural gas well walls or boreholes. The casing is inserted into the borehole and fixed with cement to prevent the borehole from separating the rock formation and the borehole from collapsing, and to ensure the circulation of drilling mud to facilitate drilling and exploitation. Different types of casing pipe that used in the process of oil extraction: Surface oil casing: Used to maintain the well to prevent contamination by shallow water and gas layers and support the wellhead equipment and maintain the weight of the casing in different levels. Technical oil casing pipe: Separate the pressure at different levels so that the drilling fluid can circulate normally and maintain the consumption casing.  Also to install anti-burst installation, leak-proof installation and stern tube in the well. Oil layer oil casing pipe: Used to export oil and natural gas from the storage layer below the surface. Also used for maintenance

There is standards and specifications for the selection of thermal insulation materials for  LSAW steel pipes , and thermal insulation materials have high requirements for the temperature and density of the heat conduction system during operation. This requires us to pay attention when select insulation material for pipes.  1. The smaller the thermal conductivity of the thermal insulation material, the better. If it is an insulating material, the thermal conductivity will be higher. 2. Choose a reasonable capacity value. Generally, the capacity of the insulation material is small, and its thermal conductivity will be small, so the corresponding mechanical strength will increase. 3. The compressive strength of the insulation material cannot be less than 3kg/cm. 4. Strong water absorption, the heat insulating material will reduce its performance after absorbing water, and it will accelerate the attachment to the metal. Changsha Xiangjia Metal Materical Co., Ltd.  the Steel Pipe Division