AISI 4130 4135 4140 High quality alloy steel cold rolled seamless
steel tube
Product Description
For carbon steel pipe (CS pipe), it should be degreased first and
then pickled, because grease is insoluble in acid solution. If pickling is performed first, neither the oil stains nor the rust
covered by the oil stains can be removed.
Degreasing pickling method for carbon seamless steel pipe:
At present, the tank immersion method is often used in
construction, and the liquid level exceeds the outer surface of the
pipe by more than 50mm during immersion. Since the oxygen pipeline needs to be treated by degreasing,
pickling and passivation, four tanks are generally made according
to the actual diameter of the pipe used. That is, degreasing tank, pickling tank, neutralization tank,
passivation tank. The oxygen pipeline degreasing and pickling process is:
degreasing→water washing→pickling→water
washing→neutralization→passivation→water washing→dr
Degreasing
The formula of the degreasing solution is as follows: each liter of
the solution contains 20g-30g of sodium hydroxide, 35g-50g of
sodium nitrate, and 3g-5g of sodium silicate. The operating process
requirements are: the liquid temperature is 70 ℃ ~ 80 ℃, the
soaking time is determined by the test method according to the
amount of oil on the surface of the pipe, generally about 10min ~
40min. The heating method can be steam. Degreasing parts shall be
inspected by any of the following methods. (1) Wipe the surface of
the degreased part with clean and dry white filter paper, if there
is no trace of grease on the paper, it is qualified. (2) Use 100%
camphor below 1mm to check the condensate to flush the condensate,
and it is qualified to keep rotating. (3) Check the surface of the
degreasing part with ultraviolet rays with a wavelength of
3200-3800 angstroms, and the grease-free fluorescence is qualified.
After degreasing treatment, the oil pollution on the pipe surface
can be removed.
ying.
| product name | carbon seamless pipe cold rolled tube |
| 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: 2-30MM |
| 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 |
Detailed Photo:
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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