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    TUBEX

    Quality Assurance Plan

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    Quality Assurance Plan

    Quality Assurance Plan

    TUBEX (AN ISO 9001:2000 CERTIFIED COMPANY)

    Sr. NoOperationCharacteristicsType/Method of CheckRef STD.Instrument UsedTesting arrived usedExtend of Check %
    1. RAW MATERIAL
    1.1Seamless Mother Hollows[A] DimensionDimensional Measurement (OD, THK)As per Application STD.Micrometer OD & THKS.T.P.LAs per Q.S.P
    [B] SurfaceVisual Inspection-VisualS.T.P.LRandom Checking
    [C] Chemical CheckingChemical check analysisAs per Std. & P.O. Req.SpectrometerAt outside NABL approved Lab.01 Sample from each heat lot.
    [D] Mechanical TestinTensile Testing (Yield st., U.T.S. & % EL.)As per approved STD.U.T.M machineS.T.P.LOn Each lot basis as per QSP
    [E] Color Coding-Color code chart---
    2. PROCESS CONTROL
    2.1Intermediate 100% Prod. & Q.C Dept. Heat Treatment[A] TemperatureTemp. MonitoringAs per Std. & PO Req.Automatic Temp. ControllerS.T.P.L100%
    [B] Speed & Feed- AC Variable DriveAutomatic Temp. ControllerS.T.P.LSpeed & feed checking for maintaining soaking time (Depends on OD & THK of the tube)
    2.2Intermediate Pickling% of HCL, % of Fe.Titration method-Chemical Testing Lab by TitrationS.T.P.LRandom Check
    2.3CoatingAcidity of Phosphating bath Fe%--Lab.S.T.P.LRandomly Check from Each lot
    2.4Drawing[A] DimensionsDimensional Measurement (OD, Thk, Length)As per Std. & P.O Req.Micrometer OD, Thk & Measuring tapeS.T.P.LRandom Dimensions ( OD, Thk, Length ) As per Application Std. & PO Req.
    [B] SurfaceVisual Inspection-VisualS.T.P.LRandom Checking
    2.5Soap Bath% of Fatly Acid--Chemical Testing LabS.T.P.LRandom Check
    2.6Heat Treatment[A] TemperatureTemperature monitoringAs per Appro. Std. & P.O Req.Automatic Temp. ControllerS.T.P.L100%
    [B] Speed & Feed-Depends on Tubes OD & ThkA.C. variable DriveS.T.P.LSpeed & feed checking for maintaining socking time ( Depends on OD, THK, of the tube )
    [C] Mechanical TestingTensile Testing / Hardness CheckingAs per Appro. Std. & P.O Req.U.T.M. Machine / Rockwell superficial hardness tester & Rockwell hardness TesterS.T.P.LU.T.M. Machine / Rockwell superficial hardness tester
    2.7PicklingHCL % & Fe %--Lab.S.T.P.L100% on each lot
    2.8Straightening[A] DimensionsDimensional Measurement ( OD, Thk, Length )As per Std. & P.O Req.Micrometer OD, Thk & Measuring tape.S.T.P.LRandom Dimensions ( OD, Thk, Length ).
    [B] SurfaceVisual Inspection--S.T.P.LRandom Checking
    2.9End CuttingLength CheckingLength check by measuring tapeAs per P.O ReqLab.S.T.P.LRandom Checking
    2.10Hydro TestingPressure Testing by keeping of pressure for minimum of 5 seconds.Hydrostatic testAs per Std. & P.O Req.Hydrostatic test Bench.S.T.P.L100%
    2.11Eddy Current( If applicable)Surface & sub surface conditionE.T Method(Non Destructive test)ASTM –A 450/ E-309Off line eddy current testing machine.S.T.P.L100%
    2.12Mechanical Testing for Mechanical Properties[A] TensileU.T.S., Yield ST & % ElAs per Std. & P.O Req.U.T.M M/C.S.T.P.LRandom Tensile test carried out As per Std. applicable.
    [B] Hardness TestingHardness testingAs per Std. & P.O Req.Rockwell superficial, Rockwell Hardness TesterS.T.P.LRandom Check as per applicable Std.
    [C] Flaring, Flatting bend testing-As per Std. & P.O Req.-S.T.P.LRandom Check as per applicable Std.
    [D] Impact Testing-As per Std. & P.O Req.Impact Testing MachineOut side NABL approved LabRandom Check as per applicable Std.
    2.13Ultrasonic Testing( If applicable)Surface & sub surface conditionNon Destructive testing by U.T. methodASTM –E 213& P.O ReqUltrasonic testing machine.Outside100%
    2.14Chemical TestingProduct analysisChemical check analysisAs per Std. & P.O Req.Spectrometer.Outside NABL approve Lab.Random testing as per app. STD Req.
    P.M.I machineChemical check analysisAs per Std. & P.O Req.Spectrometer.S.T.P.L100%
    2.15Final CuttingLengthlength measurement by measuring tapeAs per Std. & P.O Req.Measuring Tape.S.T.P.LRandom check as per application standard Req.
    3. FINAL INSPECTION
    3.1Visual Dimensional[A] DimensionalDimensional Measurement (OD, Thk, Length )As per StdMicrometer OD, Thk & measuring tapeS.T.P.L100%
    [B] Visual ( Surface )Straightens,End cuts surface checking--S.T.P.L100%
    4. PACKING
    4.1PackingProduct delivery conditionVisual--S.T.P.L100%
    5. DOCUMENTATION
    5.1Final documentsCompliance to quality system procedure, P.O. Req. & appli. TDC Req.Verification and ReviewAs per quality system procedure & PO Req. (Material Test certi.)-S.T.P.L100%