Seamless line pipes with PE coating

Line pipe is the abbreviation of pipeline steel pipe that used for conveying oil,product oil, natural gas and water in the oil and gas industry.

Line Pipe with Plain End and Beveled
Line Pipe with Plain End and Beveled

The pipelines, transporting oil, gas, mainly divided into the main transmission pipeline, regional transportation pipeline and the urban pipeline.

API 5L PSL 1: Chemical Compositions(%)
Grade C
Mn
P
S
B 0.28 1.20 0.030 0.030
X42 0.28 1.30 0.030 0.030
X46 0.28 1.40 0.030 0.030
X52 0.28 1.40 0.030 0.030
X56 0.28 1.40 0.030 0.030
X60 0.28 1.40 0.030 0.030
Note: c: The sum of the columbium [niobium], and vanadium contents shall not exceed 0.06% except that, by agreement between the purchaser and the manufacturer, an alternative maximum may be established.
API 5L PSL 2: Chemical Compositions(%)
Grade C
Mn
P
S
Si
V
Nb
Ti
CEpcm
B 0.24 1.20 0.025 0.015 0.40 c c 0.04 0.25
X42 0.24 1.20 0.025 0.015 0.40 0.06 0.05 0.04 0.25
X46 0.24 1.40 0.025 0.015 0.40 0.07 0.05 0.04 0.25
X52 0.24 1.40 0.025 0.015 0.45 0.10 0.05 0.04 0.25
X56 0.24 1.40 0.025 0.015 0.45 0.10 0.05 0.04 0.25
API 5L PSL 1: Mechanical Properties
Grade Yield Strength (Mpa) Tensile Strength (Mpa)
B ≥245 ≥415
X42 ≥290 ≥415
X46 ≥320 ≥435
X52 ≥360 ≥460
X56 ≥390 ≥490
X60 ≥415 ≥520
API 5L PSL 2: Mechanical Properties
Grade Yield Strength (Mpa) Tensile Strength (Mpa)
B 245-450 415-760
X42 290-495 415-760
X46 320-525 435-760
X52 360-530 460-760
X56 390-545 490-760
Note:

LENGTHS Range I: 4,00-12,00 meters (13,1-40,0 ft)
Fixed lengths within the manufacture lengths range. Tolerances: ± 100 mm (± 3,94 ft)

PROTECTION
Unprotected or external oiled/external varnished
Each pipe is provided with plastic protectors at both ends

MARKING
Die stamping or/and paint stenciled according to standard or per customer request
Technical details can be also marked on tags attached to each bundle.

DELIVERY
In bundles of maximum 2500 Kg, tied in minimum four places with steel strips.

MILL TEST REPORT
Mill test reports are issued to customer requirements.
Usually they comply with EN 10204 - 3.1.B (DIN 50049 - 3.1.B)

Pipe End:
square ends (straight cut, saw cut, and torch cut). or beveled for welding, beveled, 

Surface:
Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy,  Fusion Bond Epoxy, 3-layers PE)



Tech & Service of Seamless pipe

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.

How to make seamless pipe(seamless pipe process)?
Hot Piercing Workshop
Piercing process
The cross roll piercing and pilger rolling process in the size range from approx. 250 to 660 mm outside diameter.
Precision cold drawn steel tube production process
Pipe weld cracks
often follow different mechanisms can be divided into two types of thermal cracking and cold cracking.
How to calculate a steel pipe and tube theoretic weight
Calculate a steel pipe?
Pipe fittings are necessary to join together pipes, or to change the direction of an existing pipe.
Pipe beveling
Pipe beveling is the process where an angle is formed between the edge of the end of a pipe or tube and a plane perpendicular to the surface.
Steel pipe cutting machine
Pipe cutting
Cutting tools have a grinding wheel piece cutting machine (also known as toothless saw), hand saw, cutter and other hand tools.
Packing the steel pipes
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method.


SUNNY STEEL

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