Inside Dia (mm)ID Tolerance (mm)WT Tolerance
(mm)H7H8H9H10≤30+0.021/0+0.033/0+0.052/0+0.084/0±7.5%>210mm
±10%30 - ≤50+0.025/0+0.039/0+0.062/0+0.100/050 -
≤80+0.030/0+0.046/0+0.074/0+0.120/080 -
≤120+0.035/0+0.054/0+0.087/0+0.140/0120 -
≤180+0.040/0+0.063/0+0.100/0+0.160/0180 -
≤250+0.046/0+0.072/0+0.115/0+0.185/0250 -
≤315+0.052/0+0.081/0+0.130/0+0.210/0±7.5%>210mm ±10%315 -
≤700+0.057/0+0.089/0+0.140/0+0.230/0Steel GradeChemical composition
%CSiMnPSAl≤≥20#0.17-0.240.17-0.370.35-0.650.0350.035/45#0.42-0.500.17-0.370.50-0.800.0350.035/Q345B≤0.2≤0.51.00-1.600.030.03/Q345D≤0.2≤0.51.00-1.600.030.030.01525Mn0.22-0.290.17-0.370.70-1.000.0350.035/27SiMn0.24-0.321.10-1.401.10-1.400.0350.035/ST52≤0.22≤0.55≤1.60.0250.025/SAE10260.22-0.280.15-0.350.60-0.900.040.05/Delivery
ConditionCold Finished (hard) (BK)Cold Drawn and Stress-Relieved
(BK+S)Steel GradeTensile Strength (Mpa)Elongation (%)Tensile
Strength (Mpa)Yield Strength (Mpa)Elongation
(%)20#≥550≥8≥520≥375≥1545#≥640≥5≥600≥520≥1016Mn≥640≥600≥520≥1425Mn≥640≥600≥510≥1527SiMn≥800≥760≥610≥10ST52≥640≥600≥520≥14SAE1026≥640≥600≥510≥15Honed
Tube Specifications:1.Steel grade: ST52.3, 1020, CK45, 4140 ,
E355,4130, Stainless Steel 304/316, Duplex 2205, Alloy Steel
etc.2.ID: 15mm-1500mm3.OD:18mm-1800mm4.Length: max
16m5.Straightness: 0.5/1000 6.Roughness(Ra): 0.2-0.4um
7.ToleranceEXT:DIN2391,DIN17175,DIN1629,ASTM519,ASTMA106,JISG3441,GB/T8163,GB/T3639,GB9948,GB/T5312
etc.8.Tolerance INT: ISO H89.Surface
treatment:galvanized10.Tolerance:±7%11.Oiled or unoiled:Slightly
Oiled12.Delivery date:22-3013.Type: cold drawing, cold rolling,
honed14.Conservation: anti rust oiled inside and outside surface,
plastic caps in both ends15.Package: bundle with steel strip and
knitting strip, or wooden case.Company ProfileFAQQ1: Are You
Manufacture or Trade Company? We are manufacture,we have 10 years
experience for supply Metal material and products in domestic. Q2:
How can we guarantee quality? Always a pre-production sample before
mass production;Always final Inspection before shipment;Q3: What is
your terms of payment ?1.T/T: 30% deposit in advance, the balance
70% paid before shipment 2.30% down payment, the balance 70% paid
against L/C at sight3.Upon negotiationQ4: Can you provide
Certificates for aluminum materials ? Yes,we can supply
MTC-Material Test Certificate.Q5: Can you provide sample? Yes, we
can provide you sample, but you need to pay for the sample and
freight firstly. We will return the sample fee after you make an
order. /* March 10, 2023 17:59:20
*/!function(){function s(e,r){var
a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
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