API 5LSeamless Steel Yeeb NkabYog kab yeeb nkab {{}}} api 5L kab yeeb yaj, x42, x46, x56, x __, x70.
Qhov loj me ua siab ntev rau API 5L Seamless Yeeb Nkab
a. Rau sab nraud diameters tsawg dua 2 3 / 8 nyob rau hauv (60.3 mm), yeeb nkab lub cev tsis kam ua rau lub taub. Yeeb nkab kawg + / - 0.5 hli; Tawm ntawm cov roundness kam rau rau cov yeeb nkab lub cev yog 0.9 hli (0.036 hauv), yeeb nkab 0.6 hli (0.024 hli).
b. Rau od sib npaug lossis saum toj 2 3 / 8 nyob rau hauv (610 d, yeeb nkab} d tab sis max rau +} mm "}} mm (0.063mm); Roundness Deverance rau cov yeeb nkab lub cev tsawg dua los yog sib npaug rau 0.015d, cov yeeb nkab tsawg dua lossis sib npaug rau 0.01d.
(Nyob rau hauv rooj plaub tau pom zoo nrog cov chaw tsim khoom thiab cov neeg siv khoom, ntau dua kev tiv thaiv puas tuaj yeem siv)
c. Rau phab ntsa tuab
Hauv qab no tshaj li 4 hli (0.0157 hauv), thev naus laus zis +0.6 (0.024 mm), -0,5 mm (0.020 hauv);
Rau API 5L Seamless Steel Yeeb Nkab Thickness hauv 4 hli txog 10 hli (0.394 hauv),} t, -0.125t;
Rau api seamless yeeb nkab tuab 10 hli rau 25mm (0.984 hauv), +/- 0.125t;
Phab ntsa tuab ntau dua lossis sib npaug rau 25 hli, {mm lossis {} mm (0.120 hauv) lossis -0.1t (yog tias loj dua).
t rau tuab;
d. Rau txoj kev ncaj, Max rau tag nrho ntev, thev tau ntau tshaj plaws 0.15% ntawm qhov ntev.
e. Txoj kev ncaj, Max txawv rau cov yeeb nkab kawg, yuav tsum tsawg dua lossis sib npaug ntawm 0.3 mm / m.
f. Ntev + /- 200 mm rau General, + / - 25.4 mm rau tshwj xeeb.
