API kauv vuam yeeb nkab tolerances: Nyob rau hauv cov txheej txheem ntau lawm, vim qhov tseeb qhov loj yog qhov nyuaj rau ua tiav qhov nominal loj yuav tsum tau, uas yog, nws yog feem ntau loj los yog me tshaj qhov nominal loj, tus qauv qhia tau hais tias ib tug sib txawv yog tso cai ntawm qhov loj me me. thiab nominal loj.
| Yam khoom |
APISPE 5L |
|
Phab ntsa thickness kam rau ua |
D＜508mm:A,B,A25+15%t - 12.5%t D＞508mm:A,B,A25+17.5%t -12.5%t X42－X80: +19.5% t－8.0%t |
| Lub cev |
D＜508mm: ± 0.75%D D{0} －914mm: ±{4}}.75%D -0.25%D D ＞ 914mm: +6.35－3.2mm |
|
Cov yeeb nkab kawg ntev ntau yam |
D ＜ 273.1mm: +1.59mm - 0.4mm D=323.9＜508mm+2.38mm D＞508－0.79mm |
| Cov yeeb nkab kawg ovality |
D: 508 hli D ＞ 508mm: ± 1% D |
| Weld reinforcement |
t Tsawg dua lossis sib npaug rau 12.7mm: Tsawg dua lossis sib npaug rau 3.18mm t ＞ 12.7mm: Tsawg dua lossis sib npaug li 4.76mm |
|
Cov yeeb nkab kawg lossis bevelled nto lamination lossis slag suav nrog |
transverse Tsawg dua lossis sib npaug li 6.35mm |
| Specification | Tus nqi |
|---|---|
| Pipe Standard | API 5L |
| Hom yeeb nkab | Kauv Weld Pipe |
| Khoom siv | Carbon Steel, Tsawg Alloy Steel |
| Pipe Size Range | OD: 219 hli - 3620 hli |
| Phab ntsa Thickness | Nws txawv nyob ntawm OD thiab kev xav tau siab |
| Ntev | Varies (Ib leeg Random, Ob Chav Random, Tsau Ntev) |
| Txheej | 3LPE, FBE, Dub Painting, thiab lwm yam. |
| Daim ntawv thov | Roj thiab roj, kev xa dej, kev tsim qauv |
| Qhov zoo | Lub zog muaj zog, zoo tiv thaiv corrosion, raug nqi rau cov kab loj loj |
| Kev sim | Kev Ntsuas Hydrostatic, Kev Ntsuas Tsis Zoo (NDT) |
| Kev tsim khoom | Spiral Submerged Arc Vuam (SSAW) |
