China Seamless Steel Tube Hydraulic Steel Pipe Seamless Steel Pipe

Cold Drawn /Rolled Seamless Precision Steel Tubes Confirming toDIN2391; EN10305-1; EN10305-4
Steel Grade:ST37.4, ST35, E235, E355Delivery Condition:NBK
Length:3-6mPacking: Internal wrapped with plastic foilODThickness(mm)mm66*16*1.56*288*18*1.58*21010*110*1.510*21212*112*1.512*212*2.51414*114*1.514*214*2.514*31515*115*1.515*215*2.515*31616*116*1.516*216*2.516*31818*1.518*218*2.518*318*3.518*42020*1.520*220*2.520*320*3.520*42222*1.522*222*2.522*322*3.522*42525*225*2.525*325*3.525*42828*228*2.528*328*3.528*43030*230*2.530*330*3.530*430*4.530*53232*232*2.532*332*3.532*432*4.532*53434*234*2.534*334*3.534*434*4.534*534*63535*235*2.535*335*3.535*435*4.535*535*63838*238*2.538*338*3.538*438*4.538*538*64040*2.540*340*3.540*440*4.540*540*64242*2.542*342*3.542*442*4.542*542*64545*2.545*345*3.545*445*4.545*545*64646*2.546*346*3.546*446*4.5Package & Printing Service 46*546*64848*2.548*348*3.548*448*4.548*548*65050*2.550*350*3.550*450*4.550*550*65454*354*3.554*454*4.554*554*66060*360*3.560*460*4.560*560*660*8Note: 1. We can produce other specification as your requirements.
2. Surface treatment: BriShaft ght, galvanized (yellow, white, colorful), phosphated,army green passivation.
3. If you need other sizes, we also can produce.
Steel gradeC
max.Si
max.Mn
max.P
max.S
max.Altot
min.NameNumberE2151.02120.100.050.70.0250.0150.025E2351.03080.170.351.20.0250.015--E3551.05800.220.551.60.0250.015--
Outer DiameterAllowable tolerancespecial toleranceGB/T3639DIN2391ODWT4mm-20mm±0.10mm±0.08mm±0.05mm±0.05mm20mm-30mm±0.10mm±0.08mm±0.08mm±0.08mm31mm-40mm±0.15mm±0.15mm±0.10mm±0.08mm41mm-60mm±0.20mm±0.20mm±0.15mm±0.15mm61mm-80mm±0.30mm±0.30mm±0.20mm±0.20mm81mm-120mm±0.45mm±0.45mm±0.30mm±0.30mm
Steel gradeYield strengthaTensile strengthElongationNameNumberReHRmmin.min.min.MPaMPa%E2151.0212215290 to 43030E2351.0308235340 to 48025E3551.0580355490 to 63022
DesignationSymbolDescriptionCold finished (hard)BK(+C)
Tubes do not undergo heat treatment following the final cold forming and, thus, have arather high resistance to deformation
Cold finished (Soft)BKW
(+LC)
The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows acertain degree of cold forming (e.g. bending, expanding)
Cold finished and stress-relievedBKS(+SR)
Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to acertain degree.
AnnealedGBK(+A)The last Cold forming process is followed by annealing in acontrolled atmosphere.NormalizedNBK(+N)The last cold forming process is followed by annealing above the upper transformation point in acontrolled atmosphere.
1.Strictly according to DIN2391/EN10305
2.Sample: Sample is free for test.
3.Test:salt spray test/tensile test /Eddy current /chemical composition test according to customers' request
4.Certificate:IATF16949,ISO9001,SGS etc1. MOQ: if the size is Metric, it's no MOQ, if the size is Inch, the MOQ is 1ton per size
2. OEM: we can produce the tubes as client's demand
3. Good Quality: we strictly control every production process to ensure the high quality
4. After-sales service: we not only guarantee the precision tubes'
quality but also provide technical support
5. Fast delivery: if we have precision tubes in stock, will deliver the tubes after 5-15 days.
If we don't have the raw material, will deliver the tubes after 45-60 days according to the quantity.Q: Are you trading company or manufacturer ?
A: We are professional steel tube manufacture since 2003
Q:What certificates do you have ?
A:IATF16949,ISO9001,SGS
Q: How long is your delivery time?
A: According to quantity .Generally 50days after receive deposit ,
Q: Do you provide samples ?is it free or extra ?
A: Yes, we could offer the samplefor free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: 30% T/T in advance ,balance before shipment .