China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA

Looking for high-quality seamless steel pipes? Our factory specializes in manufacturing ASTM A519 4130, 4140, 4340, GB30crmo, 42CrMo, 35CrMo, and 40CrNiMoA pipes.
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PRODUCTS DETAILS

Basic Info.

Model NO.
bks-02
Usage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Construction & Decoration, Special Purpose
Section Shape
Round
Trade Term
Fob EXW CFR CIF Fca
Material Grade
37mn 34mn2 34CrMo4 35CrMo 30crmnsia 30CrMo
Shape
Round
Delivery Time
7-10 Days
Transport Package
Normal Sea Worthy Package
Specification
OD8MM~1219MM, WT.: 1MM~100MM
Trademark
BKS
Origin
China
HS Code
73041930
Production Capacity
5000ton/Month

Product Description

 

Product Description

Congratulations you find us the best supplier
We do care: 
                   --Good Quality
                       --On-time Delivery
                          --Competitive Price
                             --Efficient After Service 

 
Why you choose us?
1. more than 20 years experiences in steel business
2. good quality
3. competitive price
4. meet your needs via reprocessing
5. excellent service
6. short delivery time
7. long mutual beneficial business cooperation

Product description
 
1. Description: Honed tube is a kind of smooth bore steel tube used to manufacture hydraulic cylinder barrels that is the core part of a piece of hydraulic cylinder. 
2. Commodity: SAE1045 cold drawn seamless honed tube
3. Size range: 40mm*30mm-580mm*500mm
4. Available steel grade: 
SAE/AISI:  SAE1020, SAE1026, SAE1045, SAE4130, SAE4140
DIN:  ST52, ST52.3, ST52.4
EN:  E355, C45E, 25CrMo4, 42CrMo4, 34CRMO4,CK45, S45C, E410, E470
GB18248 37Mn,34Mn2V,34CrMo4,35CrMo,30CrMnSiA,30CrMo),30CrMoE(4130X),32CrMoE(4142
5. Manufacture method: Cold rolled, hydraulic cold drawn, hot rolled+deep hole boring
6. Delivery condition: 
BK BKW BKS GBK NBK Q+T
+C +LC +SR +A +N
Cold rolled Cold drawn Stress relieved Annealed Normalized Quenched+Tempered
7. Bore treatment: Honing, skiving&roller burnishing
8. Bore roughness control: Ra0.25um max or Ra0, 35um max for honed tubes, Ra0.25um max for skived&roller burnished tubes. 
9. End finish: Plain ends with square cuts, free of burrs for honed tubes. Little bevelled ends for skived&roller burnished tubes. 
10. Standard export packing: In bundles tied with steel strips. Int&ext oil coating. End plastic caps. External packing by PVC bags and knit bags. 
11. Customized packing and marking can be provided upon request. 
12. H8 tolerance: 
ID range Tolerance ID range Tolerance
18< d ≤30 +0/+0.033 180< d ≤250 +0/+0.072
30< d ≤50 +0/+0.039 250< d ≤300 +0/+0.081
50< d ≤80 +0/+0.046 300< d ≤315 +0/+0.081
80< d ≤120 +0/+0.054 315< d ≤400 +0/+0.089
120< d ≤180 +0/+0.063 400< d ≤500 +0/+0.097
13. Difference between honed tube and skived&roller burnished tube: In hydraulic cylinder industry, there are 2 solutions for bore treatment: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to different internal surface image, but both ensure good roughness.
 
Chemical composition(%) of precision pipe's commin grade
Standard Grade C Si Mn s p Cr
GB/T 699
GB/T 3639
GB3077
GB/T1591
GB/T 8163-2018
10# 0.07~0.13 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035 \
20# 0.17~0.23 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035 \
35# 0.32~0.39 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035 \
45# 0.42~0.50 0.17~0.37 0.50~0.80 ≤0.035 ≤0.035 \
40Cr 0.37~0.44 0.17~0.37 0.50~0.80 ≤0.035 ≤0.035 0.08~1.10
25Mn 0.22~0.29 0.17~0.37 0.70~1.00 ≤0.035 ≤0.035 ≤0.25
Q345B ≤0.20 ≤o.50 ≤1.7 ≤0.035 ≤0.035 ≤0.3
37Mn5 0.30~0.39 0.15~0.30 1.20~1.50 ≤0.015 ≤0.020 \

Conventional mechanical properties of precision pipe
Standard Grade Delivery Conditions
BK(hard) BKW(soft)
Tensil Stength(Mpa) Make percentage elongation(%) Tensile stength(Mpa) Make percentage elongation(%)
GB/T 3639
GB 3077
20# ≥550 ≥10 ≥490 ≥15
25Mn ≥600 ≥12 ≥540 ≥15
Q345B ≥620 ≥12 ≥550 ≥15
45# ≥645 ≥8 ≥625 ≥15
40Cr ≥784 ≥14 \ \
37Mn5 ≥784 ≥14 \ \

Dimensional tolerances of inner diameter
 
Standard Inner Diameter(mm) Inner Diameter Deviation(mm)
GB1801-79 H7 H8 H9 H10
30 0~+21 0~+33 0~+52 0~+84
30-50 0~+25 0~+39 0~+62 0~+100
50-80 0~+30 0~+46 0~+74 0~+120
80-120 0~+35 0~+54 0~+87 0~+140
120-180 0~+40 0~+63 0~+100 0~+160
180-250 0~+46 0~+72 0~+115 0~+185
250-315 0~+52 0~+81 0~+170 0~+210
315-400 0~+57 0~+89 0~+140 0~+230
 
Products display

China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA
China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoAChina Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoAChina Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA
China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA
China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA
Packing and shipping
 
China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA

China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA
Company information 

     Tianjin Boer King Steel is a  professional  trading company and has been in steel industry for more than 15years, specializing in seamless steel pipe,oil casing/drill pipe, galvanized steel pipe, stainless steel pipe,ERW/SSAW/LSAW/ welded pipe.

      Also we sale hot and cold rolled steel coils,steel plates,galvanized steel coils, all kinds of profiles like H-beam, Angel bar,C profile etc.

      We have established long term cooperations with several famous steel manufactures all over the world, and we can offer you best quality products with competitive price which will give you an edge over your competitors.

      Besides, we offer best service all the time.We will do our best to satisfy you needs for the products. Our products have been sold in many countries and areas of the world including South America, Iran, Kenya, Israel etc, and our export volume reaches 160,000tons per year.
 
      We execute quality gurantee system ISO 9001,2008 strictly and all certicates and the third party inspection like MTC,API,ABS,ISO9001,SGS BV etc. will be provided as client's requirements.

China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA
China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoAChina Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA
China Manufacturer Cold Drawn Seamless Steel Pipe with ASTM A519 4130 4140 4340 GB30crmo 42CrMo 35CrMo 40CrNiMoA
FAQ

Q1:How about the quality?

A:Third party inspections are always welcomed, like TUV, BV, SGS.   All of the goods will be released together with MTC and stamped by TPI. 

Q2: Can you accept customization?
A: Yes.we can do customization for you.

Q3: Do you provide samples? Free or not?
A: Yes, we could offer the sample for free but do not pay the cost of freight.

Q4: How long is the delivery time?
A: Generally about 5-10 days if the goods in stock. Or will be 15-30 days if not in stock.

Q5: How about the trade terms?
A: EXW, FOB, CFR, CIF, LC will be accepted.


Contact: Cindy yang(86-136-220-11-358)
Boer King Steel Group
Tianjin Boer King Steel Pipe Co.,Ltd
Tianjin Boer King Steel Co.,Ltd

Add: No.602,Shuanggang Development Zone,Tianjin,300350 China.
 
 
   


 

 

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