Company Profile
Fujian Blue sky pipe Manufacturing Co, Ltd., formerly known as Zhejiang Blue sky Steel pipe Manufacturing Co, Ltd., moved to Wendu Industrial Zone, Fuding in 2013.The company covers an area of 26600 m²,construction area of 11800 m²,specializing in the production of seamless steel tubes/pipes for more than 30 years.
Product Description
Seamless precision steel pipes are widely used in various fields due to their high precision, high smoothness, high thermal stability, and excellent mechanical properties. The following are its main application areas and specific uses:
1.Mechanical manufacturing: Seamless precision steel pipes are widely used to manufacture various mechanical parts and components, such as high-precision bearings, gears, hydraulic cylinders, etc. These parts play a crucial role in mechanical equipment, and the high precision and stability of seamless precision steel pipes ensure their high performance and long lifespan
2. Automotive industry: In the process of automobile manufacturing, seamless precision steel pipes are used to manufacture engine components, transmission system components, suspension system components, etc. Due to its high strength and excellent corrosion resistance, seamless precision steel pipes can meet the requirements of automotive use in various harsh environments, ensuring the safety and reliability of automobiles
3.Aerospace: Seamless precision steel pipes are widely used in the manufacturing of various components of aircraft and rockets, such as engine parts, fuselage structural components, etc., due to their high thermal stability and good mechanical properties. These parts need to withstand extremely high temperatures and pressures, and the high thermal stability and strength of seamless precision steel pipes ensure their normal operation in extreme environments
4.Petrochemical industry: Seamless precision steel pipes are widely used in the production of oil and gas pipelines, chemical equipment, etc. due to their excellent corrosion resistance and high temperature stability. It can withstand various corrosive media and high temperature and high pressure environments, ensuring the safety and efficiency of oil and gas transportation
5.Geological drilling: Seamless steel pipes also have important applications in geological drilling, such as drill rods, drill collars, core pipes, etc. These tools play a crucial role in core drilling, ensuring the smooth progress of the drilling process
6.Shipbuilding: Seamless steel pipes are used to manufacture pressure resistant piping systems, boilers, and superheaters for ships, ensuring their safe operation
7.Boiler manufacturing: Seamless steel pipes are used to manufacture superheated steam pipes, boiling water pipes, etc. for boilers, which can withstand high temperature and high pressure environments
8.Power industry: In the power industry, seamless steel pipes are also used to manufacture key components of power equipment such as generators, transformers, and transmission lines
9.Fluid transportation: Seamless steel pipes are widely used for transporting fluids such as water, oil, gas, etc., ensuring the safe transportation of fluids
10.Other applications: Seamless precision steel pipes are also used in fertilizer equipment, hydraulic and pneumatic cylinder barrels, diamond core drilling and other fields to meet the special needs of different industries
| Size tolerance |
|
|
|
|
|
| OD |
Standard tolerance |
Special tolerance |
| Outer Diameter |
GB/T3639 |
DIN2391 |
EN10305 |
O D |
thickness |
| 4mm-20mm |
±0.10 mm |
±0.08 mm |
±0.08 mm |
±0.05mm |
±0.05mm |
| 20mm-30mm |
±0.10 mm |
±0.08 mm |
±0.08 mm |
±0.08 mm |
±0.08 mm |
| 31mm-40mm |
±0.15 mm |
±0.15 mm |
±0.15 mm |
±0.10 mm |
±0.08 mm |
| 41mm-60mm |
±0.20 mm |
±0.20 mm |
±0.20 mm |
±0.15 mm |
±0.15 mm |
| 61mm-80mm |
±0.30 mm |
±0.30 mm |
±0.30 mm |
±0.20 mm |
±0.20 mm |
| 81mm-120mm |
±0.45 mm |
±0.40 mm |
±0.40 mm |
±0.30 mm |
±0.30 mm |
| Equivalent Material referance: |
| GB |
TOCT |
ASTM |
BS |
JIS |
NF |
DIN |
| 10F |
|
1010 |
040A10 |
|
XC10 |
|
| 10 |
10 |
10,101,012 |
045M10 |
S10C |
XC10 |
C10,CK10 |
| 20 |
20 |
1020 |
050A20 |
S20C |
XC18 |
C22,CK22 |
| 45 |
45 |
1045 |
080M46 |
S45C |
XC45 |
C45,CK45 |
| 30CrMo |
30XM |
4130 |
1717COS110 |
SCM420 |
30CD4 |
|
| 42CrMo |
|
4140 |
708A42 |
|
42CD4 |
42CrMo4 |
| |
|
|
708M40 |
|
|
|
| 35CrMo |
35XM |
4135 |
708A37 |
SCM3 |
35CD4 |
34CrMo4 |
| GB |
ASTM/ASME |
DIN |
EN |
JIS |
| GB/T8162 |
10 |
A53 |
A |
DIN1629 |
St37 |
EN17121 |
St37-2/3 |
G3454 |
STPG370 |
| GB/T8163 |
A106 |
A |
| GB/T3639 |
A519 |
1010 |
| |
20 |
A53 |
B |
DIN1629 |
St44 |
EN17121 |
St44-2/3 |
G3454 |
STPG410 |
| |
A106 |
B |
| |
A519 |
1020 |
| |
45 |
A1045 |
|
|
CK45 |
|
|
|
|
| |
Q235 |
A519 |
1021 |
|
|
EN10210-1 |
S235JRH |
G3444 |
STK400 |
| |
EN1097-1 |
E235 |
|
|
| |
Q345 |
A519 |
1524 |
DIN1629 |
St52 |
|
|
G3444 |
STK500 |
| |
37Mn5 |
J55 |
|
|
|
|
|
|
|
| |
35CrMo |
|
4135 |
|
|
|
|
G4105 |
SCM435 |
| |
20Cr |
|
5120 |
|
|
|
|
|
SCr420 |
| |
40Cr |
|
5140 |
|
|
|
|
|
SCr440 |
| |
15CrMo |
|
|
|
|
|
|
|
SCM415 |
| |
20CrMo |
|
4119 |
|
|
|
|
|
SCM420 |
| |
42CrMo |
|
4150/4142 |
|
|
|
|
|
SCM440 |
| |
20CrMnTi |
|
|
|
|
|
|
|
SMK22 |
| tandard |
Grade |
Chemical composition:(%) |
| C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Mo |
Cu≤ |
Ni≤ |
Ti |
V |
Nb |
| GB/T 699 |
10 |
0.07~0.13 |
0.17~0.37 |
0.35~0.65 |
0.035 |
0.035 |
≤0.15 |
|
0.25 |
0.3 |
|
|
|
| 20 |
0.17~0.23 |
0.17~0.37 |
0.35~0.65 |
0.035 |
0.035 |
≤0.35 |
|
0.25 |
0.3 |
|
|
|
| 35 |
0.32~0.39 |
0.17~0.37 |
0.50~0.80 |
0.035 |
0.035 |
≤0.25 |
|
0.25 |
0.3 |
|
|
|
| 45 |
0.42~0.50 |
0.17~0.37 |
0.50~0.80 |
0.035 |
0.035 |
≤0.25 |
|
0.25 |
0.3 |
|
|
|
| GB/T3077 |
20Cr |
0.18~0.24 |
0.17~0.37 |
0.50~0.80 |
0.035 |
0.035 |
0.70~1.00 |
|
|
|
|
|
|
| 40Cr |
0.37~0.44 |
0.17~0.37 |
0.50~0.80 |
0.035 |
0.035 |
0.80~1.10 |
|
|
|
|
|
|
| 20CrMo |
0.17~0.24 |
0.17~0.37 |
0.40~0.70 |
0.035 |
0.035 |
0.80~1.10 |
0.15~0.25 |
|
|
|
|
|
| 42CrMo |
0.38~0.45 |
0.17~0.37 |
0.50~0.80 |
|
|
0.90~1.20 |
0.15~0.25 |
|
|
|
|
|
| 20CrMnTi |
0.17~0.23 |
0.17~0.37 |
0.80~1.10 |
|
|
1.00~1.30 |
|
|
|
0.04 |
|
|
| ~0.10 |
| steel grade |
+C(BK) |
+LC(BKW) |
+SR(BKS) |
+A(GBK) |
+N(NBK) |
| |
Rm(Mpa) |
A(%) |
Rm(Mpa) |
A(%) |
Rm(Mpa) |
Reh(Mpa) |
A(%) |
Rm(Mpa) |
A(%) |
Rm(Mpa) |
Reh(Mpa) |
A(%) |
| 10 |
430 |
8 |
380 |
10 |
400 |
300 |
16 |
335 |
24 |
320~450 |
215 |
27 |
| 20 |
550 |
5 |
520 |
8 |
520 |
375 |
12 |
390 |
21 |
440~570 |
255 |
21 |
| 35 |
590 |
5 |
550 |
7 |
- |
- |
- |
510 |
17 |
≥460 |
280 |
21 |
| 45 |
645 |
4 |
630 |
6 |
- |
- |
- |
590 |
14 |
540 |
340 |
18 |
| 25Mn |
650 |
6 |
580 |
8 |
580 |
450 |
10 |
490 |
18 |
- |
- |
- |
| Q355B |
640 |
4 |
580 |
7 |
580 |
450 |
10 |
450 |
22 |
490~630 |
355 |
22 |
| Q420B |
750 |
4 |
620 |
8 |
690 |
590 |
12 |
520 |
22 |
550~700 |
425 |
22 |
| 25CrMo |
720 |
4 |
670 |
6 |
- |
- |
- |
- |
- |
- |
- |
- |
| 42CrMo |
720 |
4 |
670 |
6 |
- |
- |
- |
- |
- |
- |
- |
- |
| Material |
10#-45#, 16Mn, A53-A369, Cr-Mo alloy, Q195-Q345, ST35-ST52, 10#, 20#, 45#, 16Mn, A213, A315, 30CrMo, Q195, Q215, Q235, Q345, ST35, St37, St45, St52 |
| Surface |
Black/ Bright |
| Standard |
DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094- 2000, GB/T3639, JIS G3101 |
| Size |
OD 15mm-75mm |
| Thickness 1-14mm |
| Processing |
Cold rolled/ Cold drawn |
| 1. BK (+C) No heat treatment after last cold forming process. |
| 2. BKW (+LC) After last heat treatment there is a light finishing pass ( cold drawing) |
| 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. |
| 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. |
| 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere. |
| Packing |
Woven bag/ Wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. |
| Delivery time |
Normally 30-40 working days |
Different kinds of delivery condition, surface of pipe can be bright, galvanized, phosphating, etc.
Certifications
FAQ
Q: Are you trading company or manufacturer?
A: We are professional manufacturer for steel pipes,and our company also is a very professional and technical foreign trade company for steel products. We have more export experience with competitive price and best after-sales service. Apart from this,we can provide a wide range of steel products to meet the requirement of customer.
Q:Will you delivery the goods on time?
A: Yes,we promise to provide best quality products and delivery on time no matter if the price change lot or not. Honesty is our company's tenet.
Q: Do you provide samples ? is it free or extra?
A: The sample could can provide for customer with free,but the freight will be covered by customer account. The sample freight will be returned to customer account after we cooperate.
Q: How can I get your quotation as soon as possible?
A: The email and fax will be checked within 24 hours,meanwhile,Wechat and WhatsApp will be online in 24 hours. Please send us your requirement and order information,specification(Steel grade,size,quantity,destination port),we will work out a best price soon.
Q: Do you have any certifications?
A: Yes,that's what we guarantee to our clients. we have IS09000,IATF16949 certinicate,ISO 14001 certificates etc.Our products are of high quality and we have professional engineers and development team.
Q: What is your terms of payment?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipmenit or paid against copy of B/L within 5 working days. 100% Irrevocable L/C at sight is favorable payment term as well.
Q: Do you accept the third party inspection?
A: Yes absolutely we accept.
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