ASTM A334Papa 6he paipu hao kalapona kiʻekiʻe, haʻahaʻa haʻahaʻa me ka nui o ka carbon content o 0.30%, he manganese maʻiʻo o 0.29-1.06%, ka ikaika tensile liʻiliʻi o 415Mpa (60ksi), a me ka ikaika hua o 240Mp (35ksi).
Hoʻohana nui ʻia ia ma ke kahua o nā keʻena kinoea kūlohelohe, polar engineering, a me ka ʻenehana refrigeration, e hoʻololi ana i nā kaiapuni haʻahaʻa haʻahaʻa.
Hiki ke hana ʻia ka paipu kila ASTM A334 Grade 6 e nā kaʻina hana ʻole a welded.
Loaʻa i nā kaʻina hana welding nā ʻano like ʻole e like mewiliwili pale uila (RW)awelding arc submerged (SAW).
Ma lalo iho nei ka hana hana noHoʻopaʻa ʻia ʻo Longitudinal Submerged Arc Welding (LSAW).
Ma keʻano he mea hana i nā paipu kila welded, hiki iā mākou ke hoʻokō i nā pono kiko'ī o kā mākou mau mea kūʻai likeʻole, e hāʻawi ana i nāʻano huahana likeʻole e hōʻoia i ka hana maikaʻi a me ka maikaʻi no kēlā me kēia noi.
ʻO ka weld hoʻokahi ʻāpana o ka paipu LSAW e hoʻomaikaʻi nui i ka ikaika holoʻokoʻa o ka paipu, e ʻae iā ia e pale i nā kaomi kiʻekiʻe.
Eia kekahi, ua kūpono ia no ka hana ʻana i ka paipu kila nui-diameter a me ka pā mānoanoa e hoʻokō i nā pono o ASTM A334 Grade 6 i nā ʻoihana nui a me nā ʻōnaehana hāʻawi ikehu, e like me ke kūkulu ʻana i ke kinoea kūlohelohe liquefied nui ( LNG).
I ka manawa like, e hōʻoia ka mana o ka dimensional i nā anawaena paipu a me ka mānoanoa o ka paia no ka hoʻomaikaʻi ʻana i ka hilinaʻi pili a me ka pale ʻana i ka leakage i nā ʻōnaehana paipu.
E hoʻomaʻamaʻa ma ka hoʻomehana ʻana i kahi mahana like ʻole ma lalo o 1550 °F [845 °C] a hoʻolili i ka lewa a i ʻole i loko o ke keʻena hoʻoluʻu o ka umu hoʻomalu lewa.
Inā makemake ʻia ka hoʻomaʻamaʻa ʻana, pono e kūkākūkā ʻia.
Hoʻolālā ʻia ka hui kemika o ASTM A334 Grade 6 paipu kila e hōʻoia i nā waiwai mechanical maikaʻi i nā haʻahaʻa haʻahaʻa a me ka paʻakikī kūpono no ka lawelawe hilinaʻi ma lalo o nā kūlana koʻikoʻi.
| Papa | C (Kapona) | Mn (Manekene) | P (Pōpena) | S (Sulphur) | Si (Silikona) |
| Papa 6 | ʻoi aku ka 0.30 | 0.29-1.06 | ʻoi aku ka 0.025 | ʻoi aku ka 0.025 | min 0.10 |
| No kēlā me kēia hōʻemi o 0.01% kalapona ma lalo o 0.30%, e ʻae ʻia ka piʻi ʻana o 0.05% manganese ma luna o 1.06% i ka nui o 1.35% manganese. | |||||
No nā kila kila o ka papa 1 a i ʻole ka papa 6, ʻaʻole ʻae ʻia ka hāʻawi ʻana i nā māka alloying no nā mea ʻē aʻe ma mua o nā mea i koi ʻia.Eia naʻe, ʻae ʻia e hoʻohui i nā mea pono no ka deoxidation o ke kila.
Hoʻohana ʻia nā hoʻokolohua hopena i ka paipu kila Papa 6 ma -45°C [-50°F] i mea e hōʻoia ai i ka paʻakikī a me ka pale ʻana i ka hopena o ka mea ma nā wahi wela haʻahaʻa.
Ua mālama ʻia ka hoʻāʻo ma ke koho ʻana i ka ikehu hopena kūpono e pili ana i ka mānoanoa o ka pā o ka paipu kila.
Ua helu ʻia nā waiwai elongation liʻiliʻi no kēlā me kēia 1/32 in. [0.80 mm] emi i ka mānoanoa pā.
| Papa | Rockwell | Brinell |
| ASTM A334 Papa 6 | B 90 | 190 |
E hoʻāʻo ʻia kēlā me kēia paipu me ka uila a i ʻole hydrostatically e like me ka kikoʻī A1016/A1016M.
Inā ʻaʻole i kuhikuhi ʻia ma ke kauoha kūʻai, ʻo ke ʻano o ka hoʻāʻo e hoʻohana ʻia ma ke koho a ka mea hana.
Ho'āʻo palahalaha
Ho'āʻo ʻAla
Ho'āʻo Flange (Nā Paipu Weled)
Ho'āʻo hoʻopololei hoʻohuli
1. Nā mea hoʻoheheʻe wai kūlohelohe (LNG).: Ma muli o kona kūlana haʻahaʻa haʻahaʻa haʻahaʻa maikaʻi loa, hoʻohana nui ʻia ka paipu kila Grade 6 i ka hana LNG, mālama a me nā keʻena halihali.Pono kēia mau mea i nā mea e mālama ai i ka ikaika kiʻekiʻe a me ka paʻakikī maikaʻi i nā mahana haʻahaʻa loa.
2. Nā ʻōnaehana lawe ʻaila a me ke kinoea: hoʻohana ʻia no ka lawe ʻana i ka wai a i ʻole ke kinoea hydrocarbons, e like me ke kinoea liquefied petroleum (LPG) a me nā wai wela haʻahaʻa ʻē aʻe i kahi kaiapuni haʻahaʻa.
3. ʻenehana pahu hau a me nā hale mālama anu: Pili pū kēia i nā wahi ʻē aʻe o ka ʻenehana hoʻoheheʻe, e like me nā ʻōnaehana hoʻoheheʻe a me ka mālama anu i ka hoʻoili ʻana i ka meaʻai a me nā kaʻina hana kemika ʻē aʻe e pono ai ka hana haʻahaʻa haʻahaʻa.
4. Polar engineering: Ma nā papahana ʻenekinia ma nā ʻāpana polar, e like me nā keʻena noiʻi ʻepekema ma ka Arctic a i ʻole Antarctica, hoʻohana ʻia lākou e kūkulu i nā ʻōnaehana conveyor kūpaʻa a hilinaʻi hoʻi e hiki ke kū i ke anuanu a me nā kūlana kūlohelohe.
5. ʻO nā ʻōnaehana ea a me nā mea hoʻololi wela: Hoʻohana maʻamau ʻia i nā ʻōnaehana ea nui a me nā mea hoʻololi wela, pono e hana maikaʻi i nā haʻahaʻa haʻahaʻa e hōʻoia i ka pono o ka ʻōnaehana a me ka palekana.
6. ʻEnekinia mana a me nā wahi mana: I loko o nā papahana ʻenehana mana kūikawā, e like me kekahi ʻano o nā mana mana, hiki ke hoʻohana ʻia nā paipu kila Papa 6 no ka mālama ʻana i nā wai a i ʻole ke kinoea i nā haʻahaʻa haʻahaʻa e hōʻoia ai i ka hana palekana a me ka maikaʻi o ka ʻōnaehana.
EN 10216-4:P265NL: Hoʻohana nui ʻia no nā moku kaomi cryogenic a me nā ʻōnaehana paipu cryogenic, maikaʻi ka paʻakikī a me ka ikaika a kūpono no ka hoʻohana ʻana i nā wahi cryogenic.
DIN 17173:TTSt41N: Hoʻolālā ʻia no nā noi haʻahaʻa haʻahaʻa, hāʻawi ia i ka hana haʻahaʻa haʻahaʻa maikaʻi loa a hoʻohana mau ʻia i nā lako a me nā paipu e koi ana i nā kaiapuni hana haʻahaʻa haʻahaʻa.
JIS G3460:STPL46: Hoʻohana ʻia no nā ʻōnaehana kaʻa paipu ma nā wahi wela haʻahaʻa, hiki ke kū i kekahi mau hopena haʻahaʻa haʻahaʻa a me nā kaomi.
GB/T 18984:09Mn2V: He mea kūikawā kēia mea i ka hana ʻana i nā paipu kila maʻemaʻe no ka hoʻohana ʻana i nā wahi haʻahaʻa haʻahaʻa, me ka paʻakikī haʻahaʻa haʻahaʻa maikaʻi a me ke kūpaʻa ʻana.
I ke koho ʻana i kēia mau mea like, he mea nui ia e hōʻoia i kā lākou ʻano kemika a me nā waiwai mechanical e hoʻokō i nā koi noi noi a me nā koi hana.
Pono e hoʻohālikelike ʻia kēia mau ʻāpana i nā kikoʻī a koi ʻia nā kaʻina hoʻāʻo hou a me ka hōʻoia e hōʻoia i ka kūpono a me ka hana o ka mea.
Mai kona hoʻokumu ʻana ma 2014, ua lilo ʻo Botop Steel i mea hoʻolako alakaʻi opaipu kila kalaponama Northern China, ʻike ʻia no ka lawelawe maikaʻi loa, nā huahana kiʻekiʻe, a me nā hoʻonā piha.Hāʻawi ka hui i nā ʻano paipu kila kalapona a me nā huahana pili, me ka seamless, ERW, LSAW, a me ka paipu kila SSAW, a me ka laina piha o nā paipu paipu a me nā flanges.
ʻO kāna mau huahana kūikawā pū kekahi me nā mea kila kiʻekiʻe a me nā austenitic stainless steel, i hana ʻia e hoʻokō i nā koi o nā papahana pipeline like ʻole.
