20G:GB5310Intsimbi esemgangathweni yokwamkelwa -95 (umgangatho ohambelanayo wangaphandle: ST45.8 yaseJamani, STB42 yaseJapan, i-United States SA106B), yeyona pipe yentsimbi yebhoyila esetyenziswa kakhulu, ukwakheka kweekhemikhali kunye neempawu zoomatshini kwaye ipleyiti ye-20 iyafana ngokusisiseko. Intsimbi inamandla athile kubushushu begumbi kunye nobushushu obuphakathi obuphezulu, umxholo wekhabhoni ephantsi, iplastiki engcono kunye nokuqina, ukwenziwa kwayo okushushu nokubandayo kunye nokusebenza kwayo kwe-welding kulungile. Isetyenziswa kakhulu ekwenziweni koxinzelelo oluphezulu kunye neeparameter eziphezulu ze-boiler fittings, i-superheater yecandelo lobushushu obuphantsi, i-reheater, i-economizer kunye nodonga lwamanzi, njl. Ezifana nobushushu bodonga lombhobho obuncinci ≤500℃ umbhobho wobushushu bomphezulu, kunye nombhobho wodonga lwamanzi, ityhubhu ye-economizer, ubushushu bodonga lombhobho obukhulu ≤450℃ umbhobho womphunga, ibhokisi yokuqokelela (i-economizer, udonga lwamanzi, i-superheater yobushushu obuphantsi kunye nebhokisi yokudibanisa i-reheater), ubushushu obuphakathi ≤450℃ izixhobo zepayipi. Ngenxa yokuba intsimbi yekhabhoni iya kuvelisa i-graphitization ekusebenzeni kwexesha elide ngaphezulu kwe-450℃, ngoko ke ubushushu obuphezulu benkonzo yexesha elide bombhobho womphezulu wokufudumeza kungcono bube ngaphantsi kwe-450℃. Intsimbi ekule nqanaba lobushushu, amandla ayo anokuhlangabezana neemfuno ze-superheater kunye nombhobho womphunga, kwaye inokumelana okuhle kwe-oxidation, i-plasticity, ukuqina, iipropati ze-welding kunye nezinye iipropati zokucubungula ezibandayo nezishushu zilungile kakhulu, zisetyenziswa kakhulu. Iindawo zentsimbi ezisetyenziswa kwisithando sase-Iran (esibhekisa kwiseti enye) yipayipi yokungena kwamanzi (iitoni ezingama-28), umbhobho wokungena kwamanzi (iitoni ezingama-20), umbhobho wokudibanisa umphunga (iitoni ezingama-26), isikhongozeli se-economizer (iitoni ezi-8), kunye nenkqubo yokunciphisa amanzi (iitoni ezi-5), kwaye ezinye zisetyenziswa njengentsimbi ethe tyaba kunye nezinto ze-derrick (malunga neetoni ezingama-86).

I-Sa-210c (25MnG) : Inombolo yentsimbi kwiI-ASME SA-210isemgangathweni. Yityhubhu encinci yobubanzi bentsimbi ye-carbon manganese yeebhoyila kunye nee-superheaters, kunye nentsimbi enamandla ashushu enesimo seeperile. Ngo-1995, yatyalwa kwi-GB5310 yaza yabizwa ngokuba yi-25MnG. Ukwakheka kwayo kweekhemikhali kulula, ngaphandle komxholo ophezulu wekhabhoni kunye ne-manganese, okuseleyo kufana ne-20G, ngoko ke amandla okuvelisa aphezulu malunga ne-20% kune-20G, kwaye iplastiki kunye nokuqina kufana ne-20G. Inkqubo yokuvelisa intsimbi ilula kwaye ukusebenza kwayo okubandayo nokushushu kulungile. Ukuyisebenzisa endaweni ye-20G, kunokunciphisa ubukhulu bodonga, kunciphise ubungakanani bezinto, kodwa kunokuphucula ukudluliselwa kobushushu bebhoyila. Iindawo zayo zokusetyenziswa kunye nobushushu bokusetyenziswa ziyafana ne-20G, ezisetyenziselwa kakhulu ubushushu bokusebenza obungaphantsi kwe-500℃ udonga lwamanzi, i-economizer, i-superheater yobushushu obuphantsi kunye nezinye izinto.
I-Sa-106c: Linombolo yentsimbi ekwiI-ASME SA-106umgangatho. Yityhubhu yentsimbi yekhabhoni-manganese yeebhoyila ezinkulu ezinobukhulu obuphezulu kunye nee-superheaters. Ukwakheka kwayo kweekhemikhali kulula, kufana nentsimbi yekhabhoni engama-20G, kodwa umxholo wekhabhoni kunye ne-manganese uphezulu, ngoko ke amandla ayo okuvelisa angaphezulu nge-12% kune-20G, kwaye ukuqina kweplastiki akubi kubi. Inkqubo yokuvelisa intsimbi ilula kwaye ukusebenza kwayo okubandayo nokushisa kulungile. Ukuyisebenzisa endaweni ye-20G yokuqokelela imveliso (i-economizer, udonga lokupholisa amanzi, i-superheater yobushushu obuphantsi kunye nebhokisi yokudibanisa i-reheater), ubukhulu bodonga bunokwehliswa malunga ne-10%, okungenakukonga kuphela iindleko zezinto, kodwa kunciphise nomsebenzi wokudibanisa, kwaye kuphucule umahluko woxinzelelo xa ibhokisi yokudibanisa iqala.
15Mo3 (15MoG): Yipayipi yentsimbi esemgangathweni we-DIN17175. Yityhubhu yentsimbi ye-carbon molybdenum enobubanzi obuncinci yebhoyila kunye ne-superheater, kunye nentsimbi enamandla ashushu yohlobo lwe-pearlescent. Ngo-1995, yatyalwa kwi-GB5310 yaza yabizwa ngokuba yi-15MoG. Ulwakhiwo lwayo lweekhemikhali lulula, kodwa ine-molybdenum, ngoko ke inamandla angcono obushushu kunentsimbi ye-carbon ngelixa igcina ukusebenza okufanayo kwenkqubo njengentsimbi ye-carbon. Ngenxa yokusebenza kwayo okuhle, ixabiso eliphantsi, isetyenziswa kakhulu kwihlabathi liphela. Nangona kunjalo, intsimbi inesimo sokubonisa i-graphitization emva kokusebenza ixesha elide kubushushu obuphezulu, ngoko ke ubushushu bayo bokusebenza kufuneka bulawulwe ngaphantsi kwe-510℃, kwaye ubungakanani be-Al eyongeziweyo ekunyibilikiseni kufuneka bunqunyelwe ukulawula nokulibazisa inkqubo ye-graphitization. Le tube yentsimbi isetyenziselwa ikakhulu i-superheater yobushushu obuphantsi kunye ne-reheater yobushushu obuphantsi. Ubushushu bodonga bungaphantsi kwe-510℃. Ukwakheka kwayo kweekhemikhali C0.12-0.20, SI0.10-0.35, MN0.40-0.80, S≤0.035, P≤0.035, MO0.25-0.35; Inqanaba lamandla eliqhelekileyo σs≥270-285, σb≥450-600 MPa; I-delta yeplastiki engama-22 okanye ngaphezulu.