Bir-dhisidda maraakiibta guud ahaan waxa loola jeedaa birta dhismaheeda hull, taas oo loola jeedo birta loo isticmaalo in lagu soo saaro qaab-dhismeedyo qolof ah oo la soo saaray si waafaqsan shuruudaha qeexitaanka dhismaha bulshada. Inta badan waa la dalbadaa, la qorsheeyaa waxaana loo iibiyaa sidii bir gaar ah. Hal markab waxaa ka mid ah taarikada markabka, birta qaabeysan, iwm.
Waqtigan xaadirka ah, dhowr shirkadood oo waaweyn oo bir ah oo dalkayga ah ayaa leh wax soo saar, waxayna soo saari karaan alaabooyinka birta badda iyadoo loo eegayo baahida isticmaaleyaasha dalal kala duwan, sida Mareykanka, Norway, Japan, Jarmalka, Faransiiska, iwm. Tilmaamaha waa sida soo socota:
| Dalka | Heerka | Dalka | Heerka |
| Maraykanka | ABS | Shiinaha | CCS |
| Jarmalka | GL | Norway | DNV |
| Faransiiska | BV | Japan | KDK |
| UK | LR |
(1) Tilmaamaha kala duwan
Birta qaab dhismeedka saqafyada waxay u qaybsantaa heerar awoodeed iyadoo loo eegayo heerka waxsoosaarka ugu yar: birta qaab dhismeedka guud iyo xooga sare ee birta qaab dhismeedka.
Birta qaab dhismeedka xoogga guud ee ay qeexday Bulshada Kala-saarista Shiinaha waxay u qaybsan tahay afar heer oo tayo leh: A, B, D, iyo E; birta qaab dhismeedka xoogga badan ee ay qeexday Bulshada Kala-saarista Shiinaha waxay u qaybsan tahay saddex heerar xoog ah iyo afar heerar oo tayo leh:
| A32 | A36 | A40 |
| D32 | D36 | D40 |
| E32 | E36 | E40 |
| F32 | F36 | F40 |
(2) Qalabka makaanikada iyo isku dhafka kiimikada
Guryaha makaanikada iyo isku dhafka kiimikaad ee birta qaab dhismeedka xoogga guud
| Heerka Birta | Barta Wax-soo-saarkaσs(MPa) Min | Xoogga Jilicsanσb (MPa) | Dheerayntaσ%Min | C | 锰Mn | Si | 硫S | 磷P |
| A | 235 | 400-520 | 22 | ≤0.21 | ≥2.5 | ≤0.5 | ≤0.035 | ≤0.035 |
| B | ≤0.21 | ≥0.80 | ≤0.35 | |||||
| D | ≤0.21 | ≥0.60 | ≤0.35 | |||||
| E | ≤0.18 | ≥0.70 | ≤0.35 |
Qalabka makaanikada iyo isku dhafka kiimikaad ee birta qaab dhismeedka hull-xoog-sare
| Heerka Birta | Barta Wax-soo-saarkaσs(MPa) Min | Xoogga Jilicsanσb (MPa) | Dheerayntaσ%Min | C | 锰Mn | Si | 硫S | 磷P |
| A32 | 315 | 440-570 | 22 | ≤0.18 | ≥0.9-1.60 | ≤0.50 | ≤0.035 | ≤0.035 |
| D32 | ||||||||
| E32 | ||||||||
| F32 | ≤0.16 | ≤0.025 | ≤0.025 | |||||
| A36 | 355 | 490-630 | 21 | ≤0.18 | ≤0.035 | ≤0.035 | ||
| D36 | ||||||||
| E36 | ||||||||
| F36 | ≤0.16 | ≤0.025 | ≤0.025 | |||||
| A40 | 390 | 510-660 | 20 | ≤0.18 | ≤0.035 | ≤0.035 | ||
| D40 | ||||||||
| E40 | ||||||||
| F40 | ≤0.16 | ≤0.025 | ≤0.025 |
(3) Taxadarrada keenida iyo aqbalida alaabta birta badda:
1. Dib u eegista shahaadada tayada:
Warshada birta ahi waa in ay keentaa alaabta iyada oo la raacayo shuruudaha adeegsadaha iyo waxyaabaha lagu heshiiyey ee qandaraaska iyo bixinta shahaadada tayada asalka ah. Shahaadadu waa inay ka kooban tahay waxyaabahan soo socda:
(1) Shuruudaha qeexida;
(2) Lambarka diiwaanka tayada iyo lambarka shahaadada;
(3) lambarka dufcada foornada, heerka farsamada;
(4) Halabuurka kiimikada iyo sifooyinka farsamada;
(5) Shahaadada oggolaanshaha ee bulshada kala soocida iyo saxeexa sahanka.
2. Dib u eegis jidheed:
Bixinta birta badda, shayga jirku waa inuu lahaadaa astaanta soo saaraha, iwm. Gaar ahaan:
(1) Calaamadda oggolaanshaha bulshada ee kala soocidda;
(2) Isticmaal rinjiga si aad u dhejisid ama ugu dhejisid calaamadda, oo ay ku jiraan cabbirada farsamada sida: lambarka dufcada foornada, heerka heerka qeexida, cabbirka dhererka iyo ballaca, iwm.;
(3) Muuqaalku waa siman yahay oo siman, oo aan cillad lahayn.
Waqtiga boostada: Mar-16-2024