Ipayipi lensimbi ye-30CrMo ingxubevange inokuqukethwe kwekhabhoni okungu-0.26 ~ 0.34, okuqukethwe kwe-silicon okungu-0.17 ~ 0.37, okuqukethwe kwe-manganese okungu-0.40 ~ 0.70, okuqukethwe kwe-molybdenum okungu-0.15 ~ 0.25, okuqukethwe kwe-chromium okungu-0.80 ~ 1.10.
Izinga eliphezulu lamashubhu kabhayela wengcindezi ephakathi nendawo nephansi: GB3087-1999 amashubhu ensimbi angenamthungo kumabhoyela anengcindezi ephansi naphakathi.
Izinga lokushisa eliphakeme elakhiwe ngokuqondile ligqitshwe ipayipi lokufakwa emshinini liwuhlobo lwepayipi lokufakelwa elakhiwe ngokuqondile eligqitshwayo elisebenza kahle, ukuphepha nokwethembeka kanye nezindleko eziphansi zephrojekthi.
Ipayipi lensimbi linengxenye engenalutho futhi ubude balo bukhulu kakhulu kunobubanzi noma umjikelezo wensimbi. Ngokusho komumo wesigaba, ihlukaniswe ngamapayipi ensimbi ayindilinga, ayizikwele, angama-rectangular futhi amise okukhethekile; Ngokusho kwempahla, ihlukaniswe ngepayipi lensimbi yesakhiwo se-carbon, ipayipi yensimbi ephansi ye-alloy, ipayipi yensimbi ye-alloy kanye nepayipi yensimbi eyinhlanganisela.
I-stainless steel square tube iwuhlobo lwensimbi ende engenalutho. Ngenxa yokuthi lesi sigaba siyisikwele, sibizwa nge-square tube. Inani elikhulu lamapayipi asetshenziselwa ukuthutha uketshezi, njengowoyela, igesi yemvelo, amanzi, igesi, umusi, njll.
Ochungechungeni lwamapayipi ensimbi angenamthungo, kukhona into ebizwa nge-Q345B ipayipi lensimbi engenamthungo, eyingxenye yochungechunge lwe-alloy ephansi. Phakathi kwezinto eziphansi ze-alloy, le nto ivame kakhulu. Ipayipi lensimbi elingenamthungo le-Q345B lalibizwa ngepayipi lensimbi elingenamthungo elingu-16Mn.
Amazwe ayinhloko angenisa amashubhu obhayela yiJapan neJalimane. Imininingwane yemikhiqizo evame ukungeniswa kwamanye amazwe ingu-15914.2mm; 2734.0mm; 219.110.0mm; 41975mm; 406.460mm, njll. Ukucaciswa okuncane kungu-31.84.5mm, futhi ubude ngokuvamile bungu-5 ~ 8m.
Ingqikithi yokushisa okuphezulu kokushisa kwe-brittleness yeshubhu elikhanyayo ngokunemba ngokuvamile ibhekwa njengomphumela wokuhlukaniswa kwezakhi ezingcolile ezifana ne-phosphorus, ithini, i-antimony ne-arsenic emngceleni wokuqala wokusanhlamvu we-austenite, okuholela embrittlement yomngcele wokusanhlamvu.
I-16Mn iyinsimbi yesakhiwo esine-alloy ephansi enamandla amakhulu: okuqukethwe kwekhabhoni kungu-0.1% - 0.25%, futhi izakhi eziyinhloko ze-alloy manganese, i-silicon, i-vanadium, i-niobium ne-titanium yengezwa; Ingqikithi yayo ye-alloy ingaphansi kuka-3%.
(1) Ikhwalithi ephezulu ye-carbon structural steel amabanga ahlanganisa i-20g, 20mng kanye ne-25mng.
(2) Ingxubevange amamaki ensimbi yesakhiwo: 15mog, 20mog, 12crmog, 15CrMoG, 12CR2MOG, 12crmovg, 12Cr3MoVSiTiB, njll.
I-epoxy yangaphandle ye-polyethylene ipayipi yensimbi evimbela ukubola iwuhlobo olusha lwepayipi lensimbi eliyinhlanganisela yepulasitiki. Yakhiwe nge-substrate yepayipi lensimbi, i-epoxy resin yangaphakathi yokugqoka kanye ne-polyethylene yangaphandle yokugqoka.
Ishubhu lensimbi elingenamthungo liwumugqa omude wensimbi onengxenye engenalutho futhi alikho ilunga elizungezile. Ipayipi lensimbi elingenamthungo linengxenye engenalutho futhi lingasetshenziswa njengepayipi lokudlulisa uketshezi, njengepayipi lokuhambisa uwoyela, igesi yemvelo, igesi, amanzi nezinye izinto eziqinile. Uma kuqhathaniswa nensimbi eqinile njengensimbi eyindilinga, ipayipi lensimbi engenamthungo linamandla afanayo aguquguqukayo kanye ne-torsional kanye nesisindo esincane. Kuyinsimbi yesigaba sezomnotho.