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DIN 1629 Cold Drawn Seamless Steel Pipe ST37-2 Round For Gas Industry

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Contact name:Milly Miao

Shandong Xiangtong Huiyuan Metal Materials Co., Ltd.

DIN 1629 Cold Drawn Seamless Steel Pipe ST37-2 Round For Gas Industry

Country/Region	china
City & Province	liaocheng shandong
Categories	Metal Casting Machinery

Product Details

Cold Drawn Round DIN 1629 ST37-2 Seamless Carbon Steel Pipe for Gas Industry

Product Description

The control of the wall thickness of seamless steel pipe is a difficult point in the production of steel pipes. The measures to improve the accuracy of the wall thickness in the production mainly include the following aspects:

1. Tube billet heating

Heating must be uniform, and rapid temperature rise and fall are prohibited. The temperature rise and fall should be kept steady and slow each time, and the maximum temperature rise and fall should not exceed 30°C.

2. Centering roller

Determine whether the centering roller is installed in place, adjust the center, opening angle and the opening size of the relevant core-holding roller to be consistent, and the center of the core-holding roller should be on the rolling line.

seamless steel bare pipe

3. Rolling center line

Ensure that the rolling centerline of the piercing machine is consistent with the centerline of the piercing trolley, avoiding "up rolling" or "down rolling", so that the tube billet maintains uniform force during piercing.

4. Rolling tools

The worn plugs, guide plates, rolls and other rolling tools should be replaced in time.

5. Installation of rolling tools

The center of roll pitch and lead must be on the rolling line. Ensure that the centerline of the guide and roll pitch is on the piercing and rolling centerline, that is, the upper and lower roll pitches are equal, and the left and right guide pitches are equal.

6. Perforated ejector

The perforated ejector rod generally chooses a thick-walled pipe with an outer diameter of Φ108mm-Φ114mm, a wall thickness of ≥25mm, and a uniform wall thickness.

7. Rolling mill mandrel

The mandrel should be processed by a thick-walled tube with a thicker wall. For the mandrel with a smaller specification, a solid blank can be used instead. Thick-walled pipes and solid blanks with uniform wall thickness can greatly reduce the probability of bending deformation of the mandrel, and can effectively improve the wall thickness accuracy of the steel pipe.

8. The accuracy of the mandrel

The length of the mandrel is relatively large. Generally, the outer diameter of the mandrel is turned first and then the weld is broken, or the long material is directly turned into shape. The outer machining accuracy of the core rod is controlled within ±0.1mm, and the deviation of the straightness of the core rod does not exceed 5mm. When welding, a precision-machined pin is inserted between the two core rods for positioning to prevent the overall straightness deviation caused by welding from being too large.

9. Improve the craftsmanship

Improve the process to prevent the occurrence of intermediate thinning and increase of wall thickness beyond the control range, and improve the accuracy of wall thickness.

product name	Cold drawn seamless steel pipe
standard	GB, JIS, DIN, ASTM, bs, GB 18248-2000, JIS G3463-2006
Material	10#.20#.45#15Mn.20Mn.45Mn.30Mn2 q235 A106
packing	1.Wrapped in waterproof paper of steel pipe tube 2.Sackcloth with several steel strips of steel pipe tube 3.Cover cap of steelpipe tube 4. Wooden case of steel pipe tube
size	OD 3-300MM wall thickness: 1-30MM
suface	1. PVC, black and paint 2. Transparent oil and rust-proof oil 3. According to customer requirements
MOQ	1TONS
Trade	T/T, 100% L/C at sight, Cash, Western Union are all accepted if you have other payment,please contact me

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packing details:

Application:

FAQ:

Q1: ARE YOU FACTORY OR TRADER?
A1: Wuxi Silaishi Special Steel Co.,Ltd is a manufacturer of steel pipe and tube since 2010. We've gained our Export Right and become an integrated company of industry and trade in order to satisfy buyer's multi-request on different material and products.

Q2: WHICH MATERIAL/PRODUCTS YOU CAN PROVIDE?
A2: Seamless Stainless Steel Pipe / Tube, Seamless Carbon Stainless Steel Pipe /Tube,Galvanized Steel Tube witn any Shape and Welded pipes can also be available

Q3: HOW TO GET A SAMPLE?
A3: FREE samples are available for your checking and testing. And to get free samples, you need to send us you detailed receiving address (including post code) and your DHL/FedEx/UPS account for collecting samples, courier cost will be paid in your side.

Q4. CAN YOU PRODUCE THE PRODUCTS ACCORDING TO MY OWN DRAWINGS?
A4: Yes, we can produce the products according to your drawings that will be most satisfy you.

Q5: HOW TO VISIT YOUR FACTORY?
A5.Flights to Jinan are available from most major cities; You can take a plane to Jinan Yaoqiang Airport.

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