About our products
Description | Excavator parts Mechanical Using hydraulic cylinder honed steel tube |
Standard | ASTM ,GB ,DIN, EN AISI etc |
Material | 10#-45#,16Mn,ST35-ST52,Q345 |
O.D | 30mm-250mm |
W.T | 2mm-30mm |
Length | According to the customer’s need |
Surface/End | According to the customer’s request |
Certificate | ISO9001 2008 |
Technique | Cold drawn /rolled ,hot rolled ,etc. |
Surface | Polished, black, bright. or according to the customer’s acquirement |
Application | Hydraulic cylinder , automobile, oil drilling etc. |
Package | We usually bundle with steel strips ,branding parcel or wooden box outside or according to the customer’s need |
Delivery Time | 1.The products in stock will delivery immediately received the deposit 2.According to the order quantity, the delivery time ranges from ten days to twenty days |
Chenical composition
Material | C | Si | Mn | S(≤) | P(≤) | Cr | Ni | Mo | other |
C20# | 0.17—0.23 | 0.17—0.37 | 0.35—0.65 | 0.035 | 0.035 | ≤0.25 | ≤0.30 |
| Cu≤0.25 |
CK45# | 0.42—0.50 | 0.17—0.37 | 0.50—0.80 | 0.035 | 0.035 | ≤0.25 | ≤0.30 |
| Cu≤0.25 |
Q345B | ≤0.20 | ≤0.55 | 1.00—1.60 | 0.040 | 0.040 | V:0.02-0.15 | Nb:0.015-0.06 | Ti:0.02-0.20 | Alt≥0.015 |
ST52 E355 16Mn | ≤0.20 | ≤0.55 | 1.00—1.60 | 0.045 | 0.045 | V:0.02-0.15 | Nb:0.015-0.06 | Ti:0.02-0.20 | 16Mn |
25Mn | 0.22—0.30 | 0.17—0.37 | 0.70—1.00 | 0.035 | 0.035 | ≤0.25 | ≤0.25 |
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27SiMn | 0.24—0.32 | 1.10—1.40 | 1.10—1.40 | 0.030 | 0.030 |
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42SiMn | 0.39—0.45 | 1.10—1.40 | 1.10—1.40 | 0.030 | 0.030 |
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42CrMo | 0.38—0.45 | 0.17—0.37 | 0.50—0.80 | 0.025 | 0.025 | 0.90—1.20 |
| 0.15—0.25 |
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Finished products
The processing
The testing
The packaging and supply condition
1. bundle packing
2. marking as per customer's requests
3. paint on the pipe as per customer request
4. pipe caps as customer request
SUPPLY CONDITION
1. NBK(+N)
after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium
2. GBK(+A)
after cold forming, annealing in non oxidizing medium protective gas
3. BK(+C)
the final heat treatment after cold forming, therefore small steel pipe plastic, the plastic degree does not guarantee
4. BKW(+LC)
after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring)
5. BKS(+SR)
have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing again
About our company
We produce all kinds of specification seamless steel tube , such as cold drawn/rolled precision seamless steel tube ,honed tube ,SRBtube ,etc. And these products are application for hydraulic cylinder, automobile, oil drilling and so on.
ABOUT OUR SERVICES
Sufficient Forging, Heating, Machining Equipment
-In-house Inspection Instruments for Quality Controlling
-Competitive Price & High Quality Assurance
-Fast, Effective and Efficient Services
-Directly supplier
-Experienced Professinonals on Communications