20 # nā kī'ī pahuhopu
Gb3087: Seamless Steel pipe no ka haʻahaʻa haʻahaʻa haʻahaʻa a me keʻano ikaika
GB9948: SEME FEEELY PEPE NO KA ORRERLEUM CRACCIAM
Gb6479: SEMEMLERS Steel PIPES no nā mea kūʻai nui kiʻekiʻe
GB / T17396:ʻO ke kīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīwīʻia
20 # kilano nā mea kilokilo kiʻekiʻe-kiʻekiʻe-carbon kiʻekiʻe, wela a me nā kila paʻakikī. ʻO ka steel ka ikaika haʻahaʻa, haʻahaʻa maikaʻi, maikaʻi maikaʻi, pale a me ka welltibility. Aia i ke kiʻekiʻe o nā kilokilo kiʻekiʻe-kiʻekiʻe-carbon kiʻekiʻe, wela a me nā kila paʻakikī. ʻO ka steel ka ikaika haʻahaʻa, haʻahaʻa maikaʻi, maikaʻi maikaʻi, pale a me ka welltibility. Hoʻohana pinepineʻia ia e hana i nā pipes seamless me ka haʻahaʻa haʻahaʻa haʻahaʻa a me nā koi kiʻekiʻe kiʻekiʻe.
| Kumu | Nā laulā nui | ||||||||||||||
|
| OD | WT | |||||||||||||
| 20 # | 21 ~ 1200 | 3 ~ 130 | |||||||||||||
| Kumu | Chemical Commotant% | ||||||||||||||
|
| C | Si | Mn | Cr | Mo | V | Ti | B | Ni | Cu | Nb | N | W | P | S |
| 20 # | 0.17- | 0.17- | 0.35- | ≤ | - | - | - | - | ≤ | ≤ | - | - | - | ≤ | ≤ |
| Kumu | Waiwai waiwai | ||||||||||||||
|
| Ikaika ikaika (MPA) | Ikaika ikaika (MPA) | Elepation (l / t) | Hopena (j) Kaukaʻi / Kālepa | Paakiki (nb) | ||||||||||
| 20 # | 410- | ≥ | ≥20% | ≥40 / 27 | - | ||||||||||
1
2. E uku kumukūʻai
3
4. E hoʻopaʻa i ka'ōnaehana QC
5. Ma hope o ka lawelawe: nā huahana āpau āpau, e nānā ana i ke kumu o ka kuleana
