
SRB Honed Tube For Hydraulic Cylinder , Cold Finished Carbon Steel Tube DIN ST35 ASTM 1010 Materail
Descriptions of honed tube
En stanard SRB Honed Cold finished Hydraulic steel tube made in china is a kind of after cold rolling processing of a kind of high precison steel tube, full name cold rolled precision seamless steel tube. Precision seamless steel tube wall inside and outside the precision seamless steel pipe seamless steel pipe without oxidation layars, under high pressure without lea, high precision, high finish, cold bending deformation, flaring, flattening without cracks,etc, it is mainly used to produce pneumatic or hydraulic components products, such as a cylinder or cylinder, are made seamless tube. The chemical composition of precision seamless steel tube with carbon sulfur C,Si, Mn, S, P, Cr.
Application
Hydraulic cylinder tube ST35 DIN2391 widely used in hydraulic system with precision steel tube, injection molding machine with precision steel tube, hydraulic press with precision steel tube, shipbuilding with steel tube, EVA foaming, hydraulic machinery, hydraulic cutting machine, shoe making machinery, hydraulic equipment, high pressure tubing, hydraulic tubing, car sets of joints.
Features
Hydraulic cylinder tube DIN 2391 inside and outside the wall without oxidation layer, under high pressure, no leakage, high precision, high finish, cold bending deformation, flaring, flattening without cracks, surface rust proffing
Specification
Standard | DIN2391, DIN2445, EN10305, GB/T 3639, GB 8713 |
Grade | ST35(E235), ST37, ST24(E255), ST52(E355), 1010, 1020, 1035, 1045 |
O.D. | 6mm-426mm |
W.T. | 1mm-40mm |
Surface Treatment | Bare, varnished,oiled, anti-corrosion coating as request |
Packing | 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 |
Delivery Conditions | 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, threfore small steel pipe plasticly, the plasticly 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 |
Tolerance
OD | GB/T3639(GB8713) | DIN2391(EN10305) | Tolerence | Best Quality |
4-30mm | ±0.10mm | ±0.08mm | ±0.05mm | ±0.02mm |
31-40mm | ±0.15mm | ±0.15mm | ±0.05mm | ±0.03mm |
41-50mm | ±0.20mm | ±0.20mm | ±0.05mm | ±0.03mm |
51-60mm | ±0.25mm | ±0.25mm | ±0.08mm | ±0.03mm |
61-70mm | ±0.30mm | ±0.30mm | ±0.10mm | ±0.05mm |
71-160mm | ±0.30mm | ±0.30mm | ±0.10mm | ±0.05mm |
Tolerance in WT | ±0.12mm | ±0.10mm | ±0.05mm | ±0.03mm |
Process | Diameter | Length | Precision | Inner Hole Roughness |
Cold Rolled | 30-100mm | ≤12 m | H8-H10 | 0.4-1.6 |
Cold Draw | 30-250mm | ≤12 m | H8-H10 | 0.8-1.6 |
Honing | 40-500mm | ≤12 m | H8-H9 | 0.4-0.8 |
Rolling | 40-400mm | ≤7 m | H8 | 0.4 |
Inner Diameter | H8 | H9 | H10 |
Mechanical Properties
Material | Tensile strength | Yield strength | Elongation | Hardness |
Ck20/20#/AISI1020 | >520 N/ mm2 | >375 N/mm2 | >15% | >85HB |
Ck45/45#/AISI1045 | >600 N/ mm2 | >520 N/ mm2 | >15% | >85HB |
ST52/16Mn/Q345B | >600 N/ mm2 | >520 N/ mm2 | >15% | >85HB |
25Mn/STKM 13C-T | >600 N/ mm2 | >530 N/ mm2 | >15% | >85HB |
Our Services
1. Cargo track service during transporting and feedback service after cargo is loaded on board.
2. Flexible terms of payment.
3. Big discount for repeat customers.
4. Smooth delivering procedure.
What we can offer?
-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.
-Machining and heat treatment are available.
-Also, we advise you in choosing the right materials.
Quality Assurance
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET
Package
In standard export packing and seaworthy material with hexagon shape bundle, covered with tarpaulin, in containers or in bulk, or upon request
Payment & Delivery
1. Both T/T and L/C will be acceptable
2. Trade Terms: FOB, CIF, CFR
3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties
4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples
Company Information
Shanghai Unite Steel Trading Co., Ltd
We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.
In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.
What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!
FAQ
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and
trading company. We specialized in special steel which include
alloy structural steel and carbon steel and stainless steel, etc.
All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party,
such as TUV, CE, if you need. Secondly, we have a complete set of
inspection system and every process is checked by QC. Quality is
the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our
warehouse. If the material doesn't have stock, the delivery lead
time is about 5-30 days after receiving your prepayment or firm
order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you
come to China and arrange our driver to our airport to pick you up
when you come.
SHANGHAI UNITE STEEL
We, Shanghai Unite Steel are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.
In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china, such as: DAYE Special Steel-a famous steel enterprise with the longest steelmaking history; BAO Steel, and Dongbei Special Steel Group-the biggest special steel manufacturer; TPCO, VALIN-largest seamless steel tube production enterprise; What's more, we have built long, deep and close business relationship with dozens of steel companies, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!