welding flange

With a process or a few processes may be completed complex forging finishing. Because there is no flash, forging the force area is reduced, the required load is reduced. However, care should be taken not to completely limit the billet, in order to strictly control the volume of billet to control the relative position of forging die and forging measurements, and strive to reduce the wear of forging die. Flat welding flange at low temperature forging, the forging of the dimensional change is very small. Forging below 700 ℃, the formation of small oxide, and no decarburization on the surface.

316 and 316L

The difference between 316 and 316L stainless steel is the difference of carbon content, L means low. 316L is based on the continued reduction of carbon steel 316L. 316L because of low carbon content, so more corrosion resistance. 316 and 316L is the same but from carbon steel in the need to consume huge energy. Supply all kinds of steel, complete product specifications, quality and reliable. Logistics arrangements for free delivery!

cold forging

Hot forging, the deformation energy and deformation resistance are very small, forging complex shapes of large forgings. To obtain high dimensional accuracy of the forgings, in the 900-1000 ℃ temperature domain with hot forging processing. In addition, pay attention to improve the working environment for hot forging. Forging die life (hot forging 2-5 thousand, warm wrought 1-2 million, cold forging 2-5 million) compared with other temperature forging is shorter, but it's a large degree of freedom, low cost .

The difference between 316 and 316L

Thedifference between 316 and 316L stainless steel is the difference of carbon content, L means low. 316L is based on the continued reduction of carbon steel 316L. 316L because of low carbon content, so more corrosion resistance. 316 and 316L is the same but from carbon steel in the need to consume huge energy. Supply all kinds of steel, complete product specifications, quality and reliable. Logistics arrangements for free delivery!

welding flange

Flat welding flange should be cut along the direction of the steel rolling strip, the bending system welded into a ring-shaped, and the steel surface of the surface of the cylinder. Flat welding flange in the production of steel plates can not be directly processed into a neck flange, using a certain process of production and processing. Flat plate welding production of flat steel plate should be ultrasonic testing, non-hierarchical defects to ensure good quality and performance problems, in accordance with a certain quality requirements of production and testing to ensure that the production and use of steel without any quality problems.

stainless steel

Titanium is added to the stainless steel. Titanium has a stable chemical properties, good high temperature, low temperature resistance, acid resistance, alkali resistance, and high strength, low density, was the reputation as "space metal." Titanium and oxygen have great affinity, in the air or in oxygen medium, the titanium surface to produce a layer of dense, strong adhesion, inert large oxide film to protect the titanium matrix is not corrosion. This indicates that titanium is a metal having a strong tendency to passivate. Has excellent wear resistance.

miter elbow

 Definition of miter elbow. Miter elbow is welded by many straight pipes that cut by a certain degrees on both end ( The end pipe only one side cut). The quantity of  the pipes is depend on the customers request. The bending radius is not like the induction elbows. The bending radius of the Miter elbow is different.

smls pipe

Hebei Shengtian Group is a seamless steel pipe supplier and pipe fitting supplier. We welcome you to come and visit us.

steel pipe Q345

The material Q345 in fluid pipe in GB8163 there have three grade: Q345A,Q345B and Q345C. Q345 is also called 16Mn.

The component analysis is as the following:

Grade

Chemical Component /％

C

Si

Mn

Cr

Mo

V

Ni

Ti

Nb

Cu

N

P

S

Q345A

≤0.20

≤0.50

≤0.17

≤0.30

≤0.10

≤0.15

≤0.50

≤0.20

≤0.07

≤0.30

≤0.012

≤0.030

≤0.030

Q345B

≤0.20

≤0.50

≤0.17

≤0.30

≤0.10

≤0.15

≤0.50

≤0.20

≤0.07

≤0.30

≤0.012

≤0.030

≤0.030

Q345C

≤0.20

≤0.50

≤0.17

≤0.30

≤0.10

≤0.15

≤0.50

≤0.20

≤0.07

≤0.30

≤0.012

≤0.030

≤0.030

Forging welding flange

Forging weldingflange can be divided into free forging, upsetting, extrusion, die forging, closed die forging, closed upsetting, closed forging and closed upsetting because there is no flash material utilization is high . With a process or a few processes may be completed complex forging finishing. Because there is no forging to reduce the force of the forging area, to strictly control the volume of blank control forging die relative position and measurement of forging to reduce the wear of forging die.

flanges

Forging at low temperature forging changes in size is very small at 700 ℃ forging oxide scale and the formation of less surface decarburization phenomenon. So as long as the deformation in the forming range of cold forging easy to get a good dimensional accuracy and surface finish, as long as the control of temperature and lubrication cooling 700 ℃ the following warm forging can also get very good accuracy. Forging deformation due to deformation and deformation resistance can be very small forging complex shape of the large forgings, to get high dimensional accuracy of forgings in the 900-1000 ℃ temperature field with hot forging processing, the other should pay attention to improving the working environment forging hot forging The die life is shorter compared to forging in other temperature domains but its freedom is large and low.

seamless tube

Q345A seamless tube grade, is not to do the impact. Q345B level, is the impact of 20 degrees at room temperature. Q345C level, is the impact of 0 degrees. Q345D level, is -20 degrees shock. Q345E level, is -40 degrees shock. At different impact temperatures, the values of the impact are also different. Q The yield strength is not less than 345Mp The quality grade indicates the amount of impurity elements (carbon, manganese, silicon, sulfur and phosphorus are impurity elements in steel), A, B, C, D The less

Flange type A and typeB

Flange type A and typeB

The GB flanges and HG flanges there have two types: Type A and Type B. Generallyspeaking, the flanges that normally used is type A while in abroad the flangesize is according to type B. The reference please be attention on HG20592-20635-97you can know more.

Wehad been majored in steel flanges and pipe fitting for nearly thirty years, wehave ISO9001 and API Q1 certification. Welcome to inquiry us.

Socket elbow

Socket elbow

The socket elbows according to the material can be divided into 3 parts. Stainless steel, alloy steel and carbon steel. There pressure there have class 2000, class 3000, class 6000, class 1500 etc. Our company can supply you good quality products.

Black steel pipe

Blacksteel pipe is steel that is not galvanized with a protective coat of zinc. Its dark color results from the iron oxide that covers it, and it is sometimes referred to as black iron piping

pipe fitting flanges

Slip on flanges with a low height, the flange stiffness, load capacity has increased. Compared with the welding flange, welding workload, welding consumes high, can not withstand high temperature and pressure and repeated bending and temperature fluctuations, but the site installation is more convenient and popular can be omitted welding seam rubbing injury process.

welded pipe

Commonly used materials for welded pipe: Q235C Q235B, Q235A, 16Mn, 20#, Q345, etc. Welded pipe due to its different materials and usage, are divided into the following several standard: GB/T3091-2008 (low pressure fluid transport welded steel pipe). Mainly used for conveying water, gas, air, oil and heating hot water or steam and other generally low pressure fluid and other use pipe. Its representative material is: Q235A. GB/T14291-2006 (mineral fluid transport welded steel pipe). Mainly used in mine air pressure, drainage, gas drainage shaft with a straight seam welded steel pipe. Its representative material Q235A and Q234B. 

Nov. steel pipes prices

The steel pipe prices is in Nov is changed day  by day. As the steel pipe factory we have to modefy the price frequently. Since September to Nov. The steel pipe prices had been increased 500 RMB per ton.