Product Details

Commodity Specifications:

1.Commodity name: EN10305-1 E235 E255 E355 Cold Drawn Precision Seamless Steel Tube

2.Standard:GB/T8713,GB/T3639,DIN2391,EN10305,ASTMA519,ASTMA106-2006

3.Grade: 10#(St37/St37.2/St35.8),20#(aisi1020,ck20,St42-2/St45-8/St45-4),

45#(aisi1045,ck45,ASTM A1045),st52(16Mn,Q345D),25Mn(stkm13c-t),27SiMn

4.OD:30-250mm;

5.ID tolerance:H8,H9,H10

6. Wall thickness:10%×ID

7.Surface roughness:Ra 0.02— 0.4μm

8. Delivery condition:BK,BKW,BKS,GBK,NBK

9.Package: steel strip bundles, black paint coating, beveled ends or plain

10.Payment Terms: L/C or T/T(30% deposit and 70% balance against B/L copy)

11.Price Item:EXW,FOB,CFR or CIF

12.Delivery Time: Usually 15 working days after order confirmed& getting T/T deposit or original L/C

13.What we can provide are seamless pipe, cold drawn pipe, cold rolled pipe, honed tube, hydraulic cylinder pipe, hydraulic tube, cylinder tube, etc.

Mechanical Property:

Delivery Condition	Cold drawn+ stress-relieved(BK+S)(SR)			Cold fished (hard)(BK)
Steel Grade	Tensile strength (Rm Mpa)	Yield strength	Elogation A5%	Tensile strength (Rm Mpa)	Elogation A5%
20#	≥520	≥375	≥15	≥550	≥8
45#	≥600	≥520	≥10	≥640	≥5
E355(Q345B,St52)	≥600	≥520	≥14	≥640	≥5
25Mn	≥600	≥510	≥15	≥640	≥5
27SiMn	≥760	≥610	≥10	≥800	≥5

ID Tolerance:

ID size

ID deviation (mm)

H10

+0.021

+0.033

+0.052

+0.084

>30~50

+0.025

+0.039

+0.062

+0.100

>50~80

+0.030

+0.046

+0.074

+0.120

>80~120

+0.035

+0.054

+0.087

+0.140

>120~180

+0.040

+0.063

+0.100

+0.160

>180~250

+0.046

+0.072

+0.115

+0.185

>250~315

+0.052

+0.081

+0.130

+0.210

>315~400

+0.0527

+0.089

+0.140

+0.230

Delivery 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 plastically, the plastically 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

Our Certificate

Xinpeng have passed ISO9001:2015 verified.

Better quality System control best quality .

We have our own Labroarty on the mechanical test and UT testing!

Qualiry Team 15 persons , Target of us is 3000PPM!

Our Process

Company Information

Yantai xinpeng steel pipe co, .ltd. established in 1992, mainly produces precision cold drawn/rolled tube, honed/SRB tube, Hydraulic cylinder tube. The company is excellent equipped, good technology and powerful. Products widely used in hydraulic cylinder, Car manufacturer, excavator and many other areas. Xinpeng strictly obey ISO9001 2008 Quality System, High quality products sold to Korea, UK, Iran, Australia and many other countries, got good reputation.

SIZE OF XINPENG

Application:

1.Hydraulic Cylinder Tube---Used in the hydraulic cylinder of the heavy machinery, Cranes, excavator also forklifts. Material is various, mainly STKM-13CT, ST52, CK45 and 1020. We can work and get the mechanical property of the clients need and extended the life of the hydraulic cylinder.

2.SRB tube ----- Used in Elevator,buffer and Hydraulic Cylinder .This kind tube have a better roughness inner the tube, ra0.2-0.4um and can use directly in the hydraulic cylinder tube.

Range: ID 50-250mm and Length can work at most 6M.

3.Cold finished tube---- Widely Used. Processing range 30-300mm, biggest length is 11M.

FAQ

1.Are you a trading company or manufacturer?

We are the professional manufacturer of precision seamless steel pipe since the year 1992.

2. How can I get the price?

We usually quote within 24 hours after we get your inquiry by telling us the material, out diameter,

wall thickness length, quantity and application of the steel pipe which you need.

If you are very urgent to get the price.

please inform us in email so that we will regard your inquiry priority.

3. How can I get a sample to check your quality?
After price confirmation, you can require for samples to check our quality. we will provide you

the sample for free, however we could only make sure the same material, the dimension will be

much similar as your request but not same.

And customer should afford the charge of shipment.

4. What about the lead time for mass production?

Honestly, it depends on the order quantity and the season you place the order.

if normal order 25-30days.

5. What is your terms of delivery?
We accept FOB CIF EXW CFR.

Our Services

1. 24hours service via phone ,wechat alibaba trade manager.

2. Good package and best container method.

3. Professional explanation with professional online service

4. Factory manufacturer can assure the best quality.

5. Good delivery time as 15-30 days .

6. 3 years product assurance after usuage.

7. Good quality process in our own factory,

each lot tube have their own 5 years'life card.

we always do our best to make deal with any clients, welcome to inquiry at any time!