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BEST PIPELINE EQUIPMENT CO.,LTD
Your one stop shop for all your piping needs such as Seamless & Welded Carbon / Stainless & Alloy Steel Pipes, Mainly alloy Steel Pipes , Forged Flanges, Butt Weld Fittings, Forged Fittings,
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Outer / Inner Alloy Steel Seamless Gas Export Lines Anti - Corrosion Insulation Coating

BEST PIPELINE EQUIPMENT CO.,LTD
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Outer / Inner Alloy Steel Seamless Gas Export Lines Anti - Corrosion Insulation Coating

Brand Name : Best

Model Number : 40mm--360mm

Certification : API/CE/ISO/PED

Place of Origin : China

MOQ : 1 Pcs

Price : 500 usd/ton

Payment Terms : L/C, D/A, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 100000 Ton/Year

Delivery Time : 30 days normally, according to order quantity

Packaging Details : 30 days normally, according to order quantity

Standard : AISI, ASTM, DIN, EN, GB, JIS

Type : Round

Delivery State : Annealing/Quenching

Dimensions : 40mm--360mm

Application : Annealing/Quenching

Length : according to order(1.5m--6m)

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Product Name : Steel pipe make the world go round

Although not alway noticed, they are everywhere: pipes. Steel pipe is used in many varied constructions: football
stadiums, cilinders, roller-coasters, ships, buildings, cranes, cars, etc. Van Leeuwen Buizen is an international
supplier of steel pipe, hollow sections, fittings, flanges and valves - all quality products made by respected
manufacturers and suppliers. Each product has a wide range of applications
Hot dipped galvanising (in- and outside)
• Hot dipped galvanising in accordance with NEN EN 1461* or ASTM A-123
* NEN EN 1461 has replaced the cancelled standard NEN 1275
• Minimum length 6 meter (maximum length to be discussed)
• Minimum diameter 17 mm**
** For diameters smaller than 17 mm there are possibilities upon request. Hot dipped galvanising will then be carried out in
accordance with DIN 2444
Electrolytic zinc plating (outside only)
• Standard blue passivied
• Yellow passivied is optional
• Layer: 8-12 μ
• Lengths: 5-7 meter.
• Standard packing: in folio
PE-coating of pipe
• Polyethylene coating in accordance with NEN 6901/6902 + KIWA, respectively DIN 30670/N-n, standard thickness
of layer with an epoxy base layer (= 3-layers of coating), as per hose extrusion process.
• Colour: standard colour is yellow (black is optional)
• Layer: ≤ 4" minimum 1,8 mm, > 4" minimum 2 mm
If desired with KIWA inspection (for deliveries in the Netherlands)
Moreover there are possibilities for:
• Polyethylene coating as per sintermethod
• Outside polyethylene coating and inside cementlining
The company is active in many industrial
sectors; its customers include:
 Construction companies
 Installation companies
 Energy companies
 Mechanical engineering companies
 Pipeline contractors
 Shipbuilding companies
 Petrochemical plants
 Trading companies
DIN
DIN 1629 Seamless steel standard wall tubes, mat. St 37.0
DIN 1629 Seamless steel heavy wall tubes, mat. St 52.0
DIN 2440 Seamless steel gastubes, material St 33.0
DIN 2441 Seamless steel steamtubes, material St 33.0
DIN 2448 / 17175 Seamless steel boilertubes, material St 35.8 class I
DIN 2470(2) / 17172 Seamless steel pipes, material St E 290.7
DIN 17121-20MnV6 Seamless steel heavy wall tubes, material 20MnV6 (MW 450)
EN 10210-1/2 Seamless steel tubes, material S235JRH
EN 10210-1/2 Seamless steel tubes, material S355J2H
ISO
ISO 2938 Seamless steel mechanical tubes, material 20MnV6 (MW 450)
API
API 5 L Gr. B Seamless steel pipes, material Grade B
API 5 L Gr. B Seamless steel pipes, material Gr. B, galvanised, threaded & coupled
API 5 L Gr. X 52 Seamless steel pipes, material Grade X52
DIN 1626 Welded steel tubes, material St 37.0
DIN 2394 Welded steel precisiontubes, material St 34.2
DIN 2394 Welded steel LEBU CV® central heating pipes, material St 34.2, galvanised
DIN 2440 Welded steel gaspipes, material St 33
DIN 2441 Welded steel steampipes, material St 33
DIN 2470(1) / 1626 Welded steel tubes, material St 37.0
DIN 2458 / 1626 / 2460 HFI-longitudinally welded steel pipes, material St. 37.0
EN 10210-1/2 Welded steel tubes, material S355 J2H
EN 10219-1/2 Welded steel tubes, material S235 JRH
EN 10219-1/2 Welded steel tubes, material S355 J2H
BS 3059 / 87 part 1 Welded steel boilertubes, material ERW 320
ISO65-Light II Welded steel "class A" tubes, material TW 0
API 5L gr B SAW longitudinally welded steel pipes, material Grade B
API 5L gr B ERW longitudinally welded steel pipes, material Grade B
API 5L gr X42 ERW longitudinally welded steel pipes, material Grade X42
API 5L gr X52 SAW longitudinally welded steel pipes, material Grade X52
A 53 gr B ERW longitudinally welded steel pipes, material Grade B

Product Information :

Diameter 40mm--360mm
Surface According to order
Delivery state Annealing/Quenching and tempering
Length according to order(1.5m--6m)
Tolerance according to order
Product Keywords super duplex stainless steel plate price per kg,steel round bar,steel plate 3mm thick

Chemical composition

material
C
Si
Mn
P
S
Cr
Ni
Mo
Cu
35CrMoA
0.34-0.39
0.17-0.37
0.40-0.70
0.015
max
0.010
max
0.80-1.10
0.30
max
0.15-0.25
0.25max
42CrMoA
0.39-0.45
0.17-0.37
0.50-0.80
0.015
max
0.010
max
0.90-1.20
0.20
max
0.20-0.25
0.25max

Equivalent Steel Grade

DIN
ASTM A29
JIS G4105
BS
GB

EN ISO 10250
1.7225
4140
SCM440
708M40/708A42/709M40
42CrMo
42CrMo4

Mechanical Properties

Grade
Tensile Strength
Mpa
Yield Strength
Mpa
Elongation
%
Reduction
%
-40℃Akv2/J
Hardness
10.9
≥1040
≥940
≥9
≥48
≥50
HRC32-39
8.8
≥830
≥660
≥12
≥52
≥70
HRC23-34

Surface Treatment Bar: Origin Black, Origin Annealing bright, Turned, Peeled, Grinded

Heat Treatment/ Anealing
1) Forging
Preheat the steel carefully, then raise the temperature to 1150-1200°C for forging. Do not forge below 850°C.
2)Annealing
Heat the AISI 4140 slowly to 800-850°C and allow enough time for the steel to be thoroughly heated. Cool slowly in the furnace to 480°C followed by air cooling.
3)Stress Relieving
When parts are heavily machined, ground or otherwise subject to cold work, stress relieving will be beneficial prior to hardening.
4)Hardening
AISI 4140 steel is usually supplied ready heat treated to 18-22HRC. If further heat treatment is required annealed AISI 4140 should be heated slowly to 840-875°C and after adequate soaking at this temperature quench in oil. Temper as soon as the tools reach room temperature.
5)Tempering
Heat the AISI 4140 carefully to a suitable temperature selected by reference to a tempering chart or table (usually between 550-700°C, soak at the temperature for 2 hours per 25mm of ruling section, then allow to cool in air. Tempering between 250-375°C is not advised as tempering within this range will seriously reduce the impact value.

Quality :

Our products will be from black round bar. We will order the raw material from first class steel making companies to guarantee the inner quality. You can also lock the raw material manufacturer for your order.

We will continually improves and expands the quantity and quality of our product which exactly meet customers need. We do whatever it takes to make our clients happy.
We will develop long-term commercial and technical partnerships with customers. And we are committed to continual quality improvement of all internal processes. The success of our quality program is affirmed by our strong customer retention rate.

Certification :

Achieving the ISO 9001:2008 Certification is just one example of our Products’ dedication to quality and continuous improvement. Each employee is responsible for understanding company expectations and adhering to the procedures of our Quality Management System.
Our Products ensures customers receive the material ordered with accurate supporting paperwork. Customers can count on proper documentation, on-time performance and effective follow-up.

Our company

Our story
Since beginning operation in 1996, We has been dedicated to providing more than just material supply, We has helped customers reduce costs and improve the bottom line. This approach to partnering with customers has made our Products a leader among Steel Round bar and one of the fastest growing companies in China.

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Product Tags:

alloy steel seamless tubes

      

seamless alloy steel tube

      
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