HAINER STEEL INDUSTRIAL CO.,LTD
WENZHOU HAINER TECH. CO.,LTD
Products: ASTM , JIS, BS, Seamless Pipes/Tubes,Pipe Fittings ( Elbow,Tee, Reduce) Steel Sheets,Boiler & Heat Exchanger Tube ...
Materials: 904L,2205,310S,316L,316Ti,F321,317L,347H,304L,17-4PH,17-7PH,Inconel 625, 825 ...
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|Type:||Seamless||Surface Treatment:||Surface Treatment|
DIN2391 Cold Draw / Cold Rolled Seamless Steel Pipe With ISO8535-1
Name: DIN cold draw seamless steel tube with ISO8535-1
Mill standard:DIN2391/ASTM/EN10305-1/GB8163/JIS G3445
Steel Gr.: St35,St37.4, St45, St55,Ck45, St52
Delivery condition:BK /BKS /NBK/Annealing/Normalizing
Allowance between 0.3MM to 0.5MM
Surface treatment: phosphated and oiled/ galvanized/bright annealed
Technique:cold drawn,cold bending, flaring, flatting and tensilefore without any break or crack.
Length: random or cut length
Application: to be used in hydraulic systerm,automobile,construction machinery vehicles and in the occation where the high presure,brightness,cleanning and mechanical properties of the tube are required
Package:seaworthy paking which does not affect material (banding with steel strips, braiding parcel at outside, or wooden case, or as per your requirement )
Synopsis of Process Routing
quality carbon steel-cold drawn-heat treatment without oxidization (NBK status)- nondestructive testing, inthe wll honing andinside flushing under the high pressure- antirust oiling outside surface- plastic coaapin on both ends.
high precision, excellent brightness, no oxidization on the outer and inner walls after heat treatment, high cleanness ofinside wall, the steel tube is able to withstand high pressure, no deformation afer cold bendingm no crack after flaring and flattening, the complicated geometrial forming and machining can be realized, color of tube, gray with wihite.
1.The difference between precision seamless steel tubes and seamless steel pipe:
1) Seamless steel pipe main characteristic is a welding seam, can withstand greater pressure.Products can be very rough as-cast or cold dial.
2) Products of precision seamless steel tube is appeared in recent years, mainly is the inner hole, the size of the outer wall with strict tolerance and roughness.
2.Precision seamless steel tube features:
1) The outer diameter smaller.
2) High precision to do small batch production.
3) Cold drawn finished products of high precision, good surface quality.
4) The steel pipe transverse area is more complex.
5) Steel pipe is superior performance, dense metal.
We owned special equipment for manufacturing various high precision products