Steel Tubing Glossary of Terms
A/ua tsaug
Aluminized steel yog cov hlau uas tau coated ntawm ob sab nrog aluminium silicon alloy. Aluminized steel muaj kev sib xyaw tshwj xeeb ntawm cov khoom muaj tsis yog los ntawm cov hlau tsis yog los ntawm txhuas ib leeg. Aluminized steel qhia tau hais tias tus cwj pwm zoo dua tiv thaiv corrosion thiab yog siv rau hauv ntau daim ntawv thov qhov twg kub tsis kam yog qhov tseem ceeb.
Carbon Steel
Hlau yog cais raws li carbon steel thaum nws cov khoom raug txhais los ntawm ntau feem pua ntawm cov pa roj carbon tsis muaj ntau ntawm lwm cov ntsiab lus alloying. Raws li cov ntsiab lus carbon nce, cov hlau yuav nyuaj thiab muaj zog dua thaum lub ductility ntawm cov hlau txo.
Charpy Test
Charpy test, tseem hu ua Charpy v-notch test, yog ib qho kev sim siab uas txiav txim siab txog lub zog nqus los ntawm cov qauv ntawm cov khoom thaum lub sij hawm tawg. Ib qho dawb viav vias pendulum raug tso cai los tawm tsam thiab ua txhaum ib qho piv txwv. Qhov chaw ntawm lub pendulum ua ntej thiab tom qab lub pendulum swings yog muab piv. Lub zog absorbed yog ib qho kev ntsuas ntawm qhov cuam tshuam lub zog los yog kev sib tw toughness. ASTM tus qauv E23 qhia txog qhov kev xeem yuav tsum tau ua.
Chemical Properties
Cov khoom siv tshuaj yog qhov tsawg kawg nkaus thiab siab tshaj plaws ntawm cov khoom siv tshuaj raws li tsim los ntawm ASTM thiab SAE specifications.
Coil
Steel coils yog cov ntawv hlau uas tau raug mob los ntawm lub tshuab steel. Cov coils loj yog txiav los yog txiav mus rau qhov dav me me uas xav tau txhawm rau tsim cov tubing. Thaum unwound, lub tiaj tus coil yog tom qab tsim los tsim cov mechanical tubing.
Txias Rolled
Colled dov steel yog kub dov ntawv uas tau txias txo. Cold rolled steel muab nruj dua phab ntsa thickness kam rau ua thiab zoo deg mob dua kub dov hlau.
Crush Test
Ib qho kev sim tau ua uas tawm dag zog compressive uas yog nyob rau ntawm txoj kab uas hla ntawm lub raj uas muab tso rau ntawm qhov kawg.
Drawn Over Mandrel (DOM)
Cov txheej txheem ua haujlwm txias thib ob ua rau ERW tubing txhawm rau kom tau txais cov duab tshwj xeeb lossis nruj dua OD, ID, lossis phab ntsa tuab tolerances. Ib qho kev xaiv nruab nrab thiab qis dua rau DOM yuav yog xaj ERW tubing kom nruj dua li tus qauv A513 kam rau ua.
Eddy Kev Xeem Tam Sim No
Eddy Tam sim no kev sim yog ib qho kev sim uas tsis muaj kev puas tsuaj uas siv cov eddy tam sim no ntws los xyuas qhov tsis sib xws hauv thaj tsam weld ntawm lub raj.
Elongation
Elongation yog tus nqi ntawm qhov txuas mus tas li nyob ib puag ncig ntawm qhov tawg hauv qhov kev ntsuas nruj. Nws yog qhia raws li ib feem pua ntawm cov thawj gauge ntev.
ERW (Electric Resistance Weld)
Hluav taws xob tsis kam weld tubing (ERW) yog ib txoj hauv kev ntawm cov tubing ntau lawm qhov uas cov hlua khi ntawm cov hlau raug muab tso los ntawm kev ua haujlwm txias txias kom txog thaum ob lub npoo ntawm cov hlau tau koom ua ke hauv daim ntawv tubular. Lub tshav kub rau qhov txuas txuas txuas ntxiv yog tsim los ntawm cov seam los ntawm kev ua haujlwm ntawm cov dej ntws ntawm hluav taws xob tam sim no los ntawm kev siv induction coil.
Ua kom tiav
Finish hais txog hom nto thiab qhov kawg qhov xav tau hauv cov khoom tiav kom haum rau cov neeg siv khoom' qhov xav tau.
Flare Test
Ib qho kev kuaj kev puas tsuaj tau ua uas ntsuas qhov kev sib txuas ntawm ib lub raj thaum nws nthuav dav ntawm lub khob hliav qab ntawm ntau qib ntawm kev nthuav dav.
Flash Control
Flash tswj yog hais txog cov kev txwv sib txawv uas lub flash sab laug los ntawm ID weld hlaws tuaj yeem tswj tau thaum lub sij hawm ERW tube txheej txheem. Piv txwv li, nyem tswj rau .015" txhais tau hais tias qhov siab tshaj plaws ID weld hlaws uas tuaj yeem nyob yog .015". Cov kev cai tswj hwm Flash sib txawv los ntawm kev siv kawg.
Flash hauv
& quot; Flash hauv" yog hais txog thaum lub teeb nyem los ntawm cov vuam yog sab laug rau sab hauv ntawm lub raj thiab tsis raug tshem tawm lossis tswj thaum lub sij hawm ERW tube txheej txheem. Yog tias flash xav tau lossis tsis xav tau, thov hais txog qhov ntawd thaum lub sijhawm hais thiab xaj xaj.
Flattening Test
Kev kuaj kev puas tsuaj tau ua nyob rau hauv cov txheej txheem tsim cov raj uas tus qauv raj yog flattened mus rau qhov siab. Lub weld yog positioned nyob rau hauv ib tug predetermined qhov chaw. Kev tshuaj xyuas yog ua thaum lub sij hawm kuaj xyuas cov cim ntawm kev tawg.
Galvanized
Hais txog txheej nyias ntawm zinc tiav uas yog siv rau hlau. Galvanized steel yog siv rau hauv cov ntawv thov uas xav tau xeb tiv thaiv. Nws raug txheeb xyuas los ntawm tus qauv crystalization ntawm qhov chaw hu ua" spangle". Galvanized tubing tuaj yeem muab tau ob txoj hauv kev:" pregalvanized" txhais tau hais tias cov hlau yog galvanized ntawm lub steel zeb los yog raws li" kub-dipped galvanized" txhais tau hais tias cov tubing yog tsim los ntawm kub dov hlau thiab ces kub dipped tom qab vuam.
Ntsuas
Kev ntsuas ntawm phab ntsa thickness ntawm cov hlau. Lub Birmingham Wire Gauge terminology feem ntau siv hauv kev lag luam tubing. Rau txhua qhov ntsuas, muaj cov phab ntsa sib txuas ua ke kom phim qhov ntawd. Piv txwv li 18 gauge kuj raug xa mus rau .049" phab ntsa thickness.
Hardness
Mechanical khoom ntawm hlau uas ntsuas qhov tsis kam mus rau indentation. Hardness muaj feem xyuam rau qhov siab tshaj plaws ntawm cov hlau.
Hardness Test
Ib qho kev sim coj los ntsuas qhov hardness (ua haujlwm rau kev nkag mus) ntawm cov hlau.
Siab zog Tsawg Alloy
Tsawg alloy steels uas suav nrog cov nqi nruab nrab ntawm cov ntsiab lus alloying uas tsis yog carbon ua rau cov khoom siv kho tshuab siab dua.
Kub Rolled
Kub dov hlau yog hlau uas thaum nws tab tom tsim los yog dov yog rhuab liab-kub. Raws li cov hlau txias hauv huab cua qhib, qhov saum npoo oxidizes tsim cov xim xiav grey scale tiav. Phab ntsa thickness tolerances nyob rau hauv lub kauj yuav tsis zoo li ib tug los yog nruj raws li cov hlau ua raws li txias dov.
Kev Ntsuas Hydrostatic
Kev ntsuas siab nyob rau hauv uas cov kua, feem ntau yog dej, muab tso rau hauv cov yeeb nkab lossis lub raj ntawm qhov xav tau los xyuas kom meej tias nws yuav tsis xau lossis puas.
ID
ID yog hais txog sab hauv txoj kab uas hla ntawm lub raj. Nws yog teev nyob rau hauv nti thiab decimals ntawm ib nti.
Mechanical Properties
Cov khoom siv hluav taws xob ntawm cov hlau qhia qhov elastic thiab inelastic cov tshuaj tiv thaiv ntawm cov hlau thaum lub zog siv rau nws. Yield zog, tensile zog thiab elasticity yog ib qho kev ntsuam xyuas txhua yam ua. Kuj tseem raug xa mus rau lub cev muaj zog.
Mechanical Tubing
Mechanical tubing yog siv rau ntau hom kev siv tshuab thiab yog tsim los ua kom tau raws li kev siv kawg, specifications, tolerances thiab chemistry. Kaw qhov ntev kam rau ua thiab chemistry tso cai rau kom muaj kev sib haum xeeb ntau dua li cov yeeb nkab txheem rau cov neeg siv kawg.
Yam tsawg kawg ntawm phab ntsa Thickness
Tus nqi qis tshaj plaws uas cov hlau tuaj yeem ntsuas tau los xyuas kom meej tias nws ua tau raws li ASTM cov lus qhia rau cov kauj lossis raj lossis cov neeg siv khoom xav tau. Nws tuaj yeem suav tau los ntawm kev rho tawm cov minus tolerances los ntawm nominal phab ntsa thickness.
MSCI
Abbreviation for the Metals Service Center Institute.
NASPD
Cov ntawv luv rau National Association of Steel Pipe Distributors.
Nominal Phab Ntsa Thickness
Lub theoretical los yog teev ib tus nqi muab rau lub ntsuas los yog phab ntsa thickness ntawm hlau.
Kev kuaj tsis muaj kev puas tsuaj
Kev sim cov txheej txheem ntawm kev kuaj xyuas qhov tsis zoo yam tsis muaj kev puas tsuaj lossis hloov pauv cov khoom raug kuaj.
normalizing
Kev kho cua sov ntawm cov hlau qhov twg lub raj los yog vuam seam ntawm lub raj yog rhuab saum toj no qhov tseem ceeb thiab ces txias nyob rau hauv tseem huab cua. Cov qauv siv lead ua yog ua kom zoo dua qub thiab muaj lub zog zoo ib yam. Cov kev ntxhov siab sab hauv raug tshem tawm hauv cov hlau.
OD
OD yog lub npe luv rau sab nraud txoj kab uas hla. Nws yog qhia nyob rau hauv nti, decimals ntawm ib nti thiab nyob rau hauv metric.
Oiling
Daim ntawv thov ntawm cov roj los yog txheej rau lub raj tiav los pab txhim kho lub txee lub neej ntawm lub raj thiab kom qeeb rusting. Nyob ntawm qhov kawg ntawm kev siv cov tubing, oiling tej zaum yuav los yog tsis yuav tsum tau.
Ovality
Ovality yog qhov sib txawv ntawm qhov siab tshaj plaws thiab qhov tsawg kawg nkaus diameters ntawm ib ntu ntawm ib puag ncig lub raj raws li ntsuas.
Pickled& Roj
Feem ntau hu ua HR P& O, pickled& oiled yog ib tug tiav qhov twg kub dov kauj yog descaled ntawm oxide zaj duab xis los yog nplai los ntawm ib tug chemical method, mechanical method, los yog ib tug ua ke ntawm ob qho tib si thiab ces oiled los pab tiv thaiv corrosion tom qab descaling. Pickled& oiled steel muaj ib tug huv si nto dua li kub dov hlau, ua rau nws ib tug txaus nyiam lwm txoj rau txias dov hlau nyob rau hauv cov nqe lus ntawm tus nqi yog hais tias cov phab ntsa thickness kam rau ua tsis raws li qhov tseem ceeb.
Yeeb
Cov yeeb nkab yog ib puag ncig hollow ntawm cov hlau uas ua rau cov yeeb nkab nominal loj (NPS) thiab siv ua ke nrog lub sij hawm" sij hawm" uas txhais cov phab ntsa thickness. Nws yog tsuas yog siv los xa cov kua, gasses thiab lwm yam khoom. Nws yog ib qho tseem ceeb kom paub qhov txawv ntawm cov ntsiab lus yeeb nkab thiab lub raj. Tube raug txheeb xyuas los ntawm OD loj thiab phab ntsa tuab. A 2" NPS teem caij 40"pipe" loj yuav piav raws li 2.375" OD x .156" phab ntsa hauv ib" raj" qhov loj.
Rov qab Flattening Test
Kev ntsuas rov qab flattening suav nrog kev coj tus qauv ntawm cov tubing ntawm qhov ntev thiab kev sib cais yog lonitudinally ntawm 90 degrees ntawm txhua sab ntawm qhov vuam. Cov qauv yog qhib thiab flattened nrog lub weld cheeb tsam ntawm qhov taw tes ntawm qhov siab tshaj plaws khoov. Nws yog siv feem ntau los xyuas qhov tsis muaj weld nkag mus.
Scale
Txhais raws li oxide ntawm hlau uas yog tsim rau saum npoo ntawm hlau tom qab cua sov.
Slitting
Slitting yog qhov txuas txuas txuas mus txuas ntxiv ntawm txoj kab dav dav rau hauv ob lossis ntau qhov sib cais los ntawm cov riam rotary mounted rau ntawm ib qho rotating arbor..
Stainless
Stainless hlau yog cov hlau alloy uas muaj ntau tshaj 10 feem pua chromium. Stainless hlau yog lub npe hu rau tsis staining, corroding los yog xeb yooj yim li carbon hlau. Muaj ntau ntau qib sib txawv ntawm stainless hlau xws li stainless 304, 316, 409, 410 thiab 416.
STI
Abbreviation for the Steel Tube Institute.
Tus Qauv Tubing
Tubing uas feem ntau yog siv rau kev siv cov txheej txheem. Cov kev xav tau muaj zog pab qhia cov hom hlau siv rau cov ntawv thov tshwj xeeb.
Submerged Arc Weld (SAW)
SAW yog ib hom arc vuam nyob rau hauv uas lub flux yog ib qho khoom siv vuam tshwj xeeb?yog siv los tiv thaiv thaj tsam weld los ntawm cov teebmeem ntawm cov huab cua nyob ib puag ncig thiab txhim kho cov xwm txheej rau kev tsim cov vuam. Ib tug weld hlaws mus txog .250" ntawm ib nti yog sab laug ntawm OD ntawm lub raj.
Steel Tubing Glossary of Terms
A/ua tsaug
Aluminized steel yog cov hlau uas tau coated ntawm ob sab nrog aluminium silicon alloy. Aluminized steel muaj kev sib xyaw tshwj xeeb ntawm cov khoom muaj tsis yog los ntawm cov hlau tsis yog los ntawm txhuas ib leeg. Aluminized steel qhia tau hais tias tus cwj pwm zoo dua tiv thaiv corrosion thiab yog siv rau hauv ntau daim ntawv thov qhov twg kub tsis kam yog qhov tseem ceeb.
Tensile zog
Tensile zog - kuj hu ua" lub zog kawg" - yog ib qho kev ntsuas ntawm lub peev xwm ntawm cov hlau los tiv thaiv kev ntxhov siab ntev, qhia tias qhov kev ntxhov siab loj tshaj plaws uas cov hlau tuaj yeem sawv tsis tau tawg.
Tolerances
Qhov kev tso cai sib txawv hauv kev ntsuas los ntawm qhov xav tau ntawm tus neeg siv khoom thov lossis dab tsi ASTM specification hu rau. Piv txwv ntawm cov tubing kam rau ua xws li OD, ID, phab ntsa thickness, tshuaj thiab ntev kam rau ua.
Tubing
Tubing yog cov khoom uas tsis yog-tus qauv hollow zoo li cov khoom tsim los rau qhov tshwj xeeb qhov ntev, tshuaj thiab cov khoom siv kho tshuab. Nws yog ib qho tseem ceeb kom paub qhov txawv ntawm cov ntsiab lus ntawm cov yeeb nkab thiab tubing. Lub raj tau txheeb xyuas los ntawm OD qhov loj thiab phab ntsa tuab thaum lub yeeb nkab yog tsim los rau cov npe tshwj xeeb. A 2" NPS teem caij 40"pipe" loj yuav piav raws li 2.375" OD x .156" phab ntsa hauv ib" raj" qhov loj.
Huab cua hlau
Weathering steel yog cov hlau tiav uas siv cov khoom xws li tooj liab, chromium, npib tsib xee thiab silicon los txhim kho kev tiv thaiv thiab tiv thaiv atmospheric corrosion.
Weld Bead
Qhov tsim tau ib feem ntawm lub vuam, tsim los ntawm niam txiv cov khoom ntawm lub raj nrog hluav taws xob tsis kam welded (ERW) tubing los yog los ntawm cov hlau muab tub lim nyob rau hauv cov ntaub ntawv ntawm submerged arc welded (SAW) tubing. Lub OD welded hlaws yog tus qauv raug tshem tawm hauv ERW tube ua cov txheej txheem thaum ID weld hlaws yuav raug tso rau hauv (flash hauv) lossis tswj tau rau qhov sib txawv (flash tswj) raws li tus neeg siv khoom xav tau lossis siv daim ntawv thov kawg.
Yield zog
Lub zog tawm los yog qhov kev ntxhov siab uas cov hlau pib nthuav tawm qhov sib txawv ntawm qhov tsis muaj zog.
