Q235B spiral steel pipe for drainage ,Large diameter thick-walled spiral steel pipe,SSAW pipe ,spiral welded steel pipe for pile , SSAW welded tube ,L245 spiral steel pipes

Q235B spiral steel pipe for drainage is mainly used as urban water supply pipeline and water supply and drainage pipeline

Large diameter thick-walled spiral steel pipe refers to the diameter of DN850 above the spiral steel pipe.It have below material :

Q235A，Q235B、10#、20#、Q345（16Mn）、

L245(B)、L290（X42）、L320（X46）、L360（X52）、L390(X56)、L415(X60)、L450(X65)、L485(X70)、L555(X80) L290NB/MB（X42N/M）、L360NB/MB（X52N/M）、L390NB/MB(X56N/M)、L415NB/MB(X60N/M)、L450MB(X65)、L485MB(X70)、L555MB(X80)。

Large diameter thick-walled spiral steel pipe production of the main raw material is strip. The strength of the spiral steel pipe is generally higher than that of the straight seam welded pipe, and the pipe with larger diameter can be produced with the narrow billet. The same width of the blank can also produce different pipe diameter. Large-scale spiral steel pipe is a double-sided submerged arc welding technology, submerged arc welding with welding quality and stability, high welding productivity, no arc and dust and so on. The main parameters of the outer diameter, wall thickness, length and so on. The main mechanics of testing water pressure, bending, flattening and other experiments.

Large diameter thick - walled spiral steel pipe specification price list

Deviation Range of Large Diameter Thick Wall Spiral Steel Pipe Standard

SY / T5037-2000 standard: diameter> 508, plus or minus 10.0% T

GB / 9711.1-1997 standard: diameter> 508, negative 10.0% T is 17.5T

Standard for implementation of large diameter thick - walled spiral

SY / T5037-2008 (part of the standard, also known as ordinary fluid pipeline with spiral submerged arc welded pipe)

GB / T9711.1-2008 (GB, also known as oil and gas industry transport steel pipe)

API-5L (American Petroleum Institute, also known as pipeline steel pipe)

SY / T5040-2008 (spiral welded steel pipe for pile).

SY5039-2000 (general low-pressure fluid transmission with high-frequency spiral welded pipe)

Large diameter thick-walled spiral steel pipe Material:

Q235A, Q235B, 20 #, Q345 (16Mn), x42-x70 pipeline steel

Large diameter thick-walled spiral steel pipe Uses:

For liquid delivery with: water supply, drainage.

For gas transportation with: gas, steam, liquefied petroleum gas.

For the structure with: for the piling pipe, for the bridge; terminal, road, building structure and Q235B spiral steel pipe for drainage so on.

L245 spiral steel pipe

L245 spiral steel pipe material is mainly L245 strip, L245 is a low pressure fluid roll tube, its performance and 20 # seamless tube almost, the implementation of standards: API SPEC 5L GB / T9711.1 GB / T9711.2. Currently on the market common specifications for the model 219 ---- 1220mm, generally no cash, need to be customized according to the requirements of users.

Stacking principle requirements of SSAW welded tube

1) the principle of L245 spiral steel pipe stacking requirements in the palletizing stability, to ensure the safety of the premise, so that by varieties, specifications palletizing, different varieties of materials to be palletizing, to prevent muddy and mutual erosion;

2) prohibit the spiral steel pipe in the storage area around the erosion of steel objects;

3) Large diameter thick -walled spiral steel pipe bottom should be high, strong, smooth, to prevent the material damp or deformation; L245 spiral steel pipes

4) the same material according to the storage were stacked; SSAW pipe 

5) open-air stacked spiral steel pipe, the following must have a wooden mat or stone, stacking a slight tilt to facilitate drainage, and pay attention to the material placed flat to prevent bending deformation; spiral welded steel pipe for pile

6) spiral steel pipe stacking height, artificial homework of not more than 1.2m, mechanical homework of not more than 1.5m, stacking width of not more than 2.5m;

7) between the stack and the stack should leave a certain channel, check the road is generally 0.5m, access channel depending on the material size and transport machinery may be, generally 1.5 ~ 2.0m;Q235B spiral steel pipe for drainage

8) open piling steel and channel should be placed, that is, mouth down, I-beam should be put, the steel I-groove surface can not be up, so as not to rust water;

9) the bottom of the stack, if the warehouse for the sun to the cement floor, the pad can be 0.1m; if the mud, to be pad 0.2 ~ 0.5m. If the open field, cement ground pad height 0.3 ~ 0.5m, sand surface pad height 0.5 ~ 0.7m . Large diameter thick-walled spiral steel pipe