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Specifications
tube/seamless steel honed tubes/internal honed with external hard chromium plate tube/internal honed & hard chromium plate tubetube
For steel products:
a. seamless steel honed tubes
b. internal honedwith external hard chromium plate tube
c. internal honed & hardchromium plate tube
e. high-carbon anti-friction bearing steel bar
f. hollow bar
g. induction hardening chromium plate bar sae 1045/jis s45c/din ck45
For aluminum products:
a. aluminum alloy tubes for pneumatic cylinder
b. aluminum alloy profile tubes for pneumatic cylinder
For stainless steel products:
a. stainless steel chrome plate rods/grind rods type sus 303/304/316
b. stainless seamless steel honed tubes/extra-thin seamless steel tube sus 304/304l/316/316l
c. stainless seamless/welded industrial steel pipes astm a312
d. stainless seamless/welded steel sanitary tubing astm a270
Grade: CK45, ST 52.3 BK +S
O.D: 20 to 700mm
Max length 12m
Straightness: 0.3 -1.0/1000
Tolerance EXT: DIN 2391
Tolerance INT: ISO H8 to H9
Roughness(Ra): 0.2 to 0.8
Tensile strength: > 60kgf/mm2
Yield Point: > 52kgf/mm2
Elongation: ≥14%
TOLERANCES
1.OUTER DIA
<40mm ±0.2mm
FROM 40 TO 100mm ±0.3mm
>100mm ±0.5mm
2.WALL THK
<120mm OD ±5%
>120mm ±7.5%
3.STRAIGHTNESS 1/1000 OF THE TUBE LENGTH
4.INSIDE HONNED DIA ISO H8
5.ROUGHNESS 0.2-0.4µ
6.LENGTHS
LENGTH<500 +2mm
500<LENGTH<=2000 +3mm
2000<LENGTH<5000 +6mm
5000<LENGTH<7000 +10mm
7.TUBE ENDS
TUBE ENDS SHALL BE CUT NOMINALLY SQUARE TO THE TUBE AXIS AND SHALLBE FREE FROM THE EXCESSIVE BURRS
8. APPEARANCE
1. TUBES SHALL HAVE A SMOOTH INTERNAL & EXTERNAL SURFACE CONSISTENT WITH
COLD WORKING PROCESS
TUBE INNER SURFACE SHOULD BE FREE FROM RUST, DENT & SCRATCHES
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