Q: Yuav ua li cas vuam txoj kev pom zoo rau API 5L X65 seamless yeeb nkab?
A: shielded hlau arc vuam (SMAW), roj hlau arc vuam (GMAW), los yog submerged arc vuam (SAW) nrog qis - hydrogen electrodes raug pom zoo, tom qab preheat thiab interpass kub tswj.
Q: Dab tsi yog qhov hardness txwv rau ASTM A335 P91?
A: Hardness yuav tsum tsis txhob ntau tshaj 250 HBW los yog 265 HV rau ASTM A335 P91 kom tsis txhob tawg nyob rau hauv siab - kub kev pab cuam.
Q: Yuav ua li cas yog ASTM A179 seamless raj siv nyob rau hauv tshav kub exchangers?
A: ASTM A179 (qis-cov pa roj carbon steel)) yog siv rau cov cua kub exchanger thiab condenser raj vim nws thermal conductivity zoo thiab muaj peev xwm yuav khoov los yog nthuav.
Q: Dab tsi yog qhov ntev ntev rau API 5L X42 seamless yeeb nkab?
A: Dimensional tolerances ib API 5L suav nrog txoj kab uas hla (± 0.75%), phab ntsa thickness (+12.5%/-10%), thiab ntev raws li tau teev tseg, feem ntau ± 0.5 ntiv tes.
Q: Yuav ua li cas tsis yog -kev ntsuas kev puas tsuaj rau ASTM A106 Gr. B?
A: ASTM A106 yuav tsum tau kuaj hydrostatic, thiab tsis yog - kuaj kev puas tsuaj xws li ultrasonic lossis eddy tam sim no yuav raug teev rau cov ntawv thov tseem ceeb.
