Nānā nui

Hiki iā mākou ke kuleana e hoʻokō i kāu mau makemake a hāʻawi mākaukau iā ʻoe. ʻO kou ʻoluʻolu ko mākou uku nui loa. Ke ʻimi nei mākou i mua i kāu kipa ʻana no ka ulu hui. Ma muli o kā mākou hoʻoikaika ʻana, ua lanakila kā mākou waiwai i ka hilinaʻi o ka poʻe kūʻai aku a hiki ke kūʻai like ʻia ma ʻaneʻi a ma waho. Ke koi nei kā mākou hale hana i ke kumu o "Quality First, Sustainable Development", a lawe ʻo "Honest Business, Mutual Benefits" i kā mākou pahuhopu hoʻomohala. Mahalo nui nā lālā a pau no ke kākoʻo o nā mea kūʻai aku kahiko a me nā mea hou. E hoʻomau mākou i ka hana ikaika a hāʻawi iā ʻoe i nā huahana kiʻekiʻe loa a me ka lawelawe.

E pili ana i ke kila kalapona i wili ʻia a me ka paipu ʻole, no ka hoʻonui ʻana i ka hiki ke kū i ka corrossion, e loaʻa kekahi ʻano lapaʻau ʻili no ka paipu. ʻO kekahi o nā mea i hoʻohana nui ʻia ʻo ka zinc coat (galvanize). ʻElua ʻano hana galvanize: glavanizing anuanu (electrogalvanizing) a me ka galvanizing wela. No ka pilikia kaiapuni, ua kaupalena ʻia ka glavanizing anuanu ma Kina, a ʻaʻole hiki ke hoʻohana ʻia ka galvanizing wela e like me ka paipu wai, akā hoʻohana nui ʻia i ke ahi ahi, ka uila a me ke ala.

Cold galvanizing is electrogalvanizing, no ka palena o ka ʻenehana, ʻaʻole nui ka zinc coat, ka nui ma 10-50g/m2, no laila, ʻoi aku ka liʻiliʻi o kona hiki ke kū i ka corrossion ma mua o ka galvanizing wela. Ua ho'opau 'ia ka 'Oihana o ke kūkulu 'ana i ka ho'opau 'ana i nā paipu u'i anu me ka 'enehana hope, a ua pāpā 'ia ka ho'ohana 'ana i nā paipu wai anuanu no nā paipu wai a me ke kinoea. ʻO ka papa galvanized o ka paipu kila i hoʻopaʻa ʻia i ke anuanu he papa electroplated, a ʻo ka papa zinc a me ka substrate paipu kila i hoʻopaʻa kūʻokoʻa. He lahilahi ka papa zinc, a pili wale ka papa zinc i ka substrate paipu kila a maʻalahi ke hāʻule. No laila, ʻilihune kona pale ʻana i ka corrosion.

Hoʻokumu ʻia ka papa hana hoʻoheheʻe wela o ka paipa galvanizing e ka hopena o ka metala i hoʻoheheʻe ʻia a me ka substrate hao, i hui pū ʻia ka substrate a me ka papa plating, a ʻaʻole maʻalahi ka hāʻule ʻana o ka papa plating. Loaʻa i ka Hot dip galvanizing nā mea maikaʻi o ka uhi ʻaʻahu, ka hoʻopili ikaika a me ke ola lawelawe lōʻihi. ʻO ka pāpaʻi paipu kila hoʻoheheʻe wela a me ka hoʻoheheʻe hoʻoheheʻe hoʻoheheʻe ʻia e loaʻa i nā hopena kino a me nā kemika paʻakikī e hana i kahi ʻāpana zinc-hao me ka hana paʻa. Hoʻohui ʻia ka ʻāpana alloy me ka papa zinc maʻemaʻe a me ka substrate paipu kila, no laila ua ikaika kona pale ʻana i ka corrosion.

Palapala noi

Hoʻohana nui ʻia ia no nā ʻāpana ikaika a me nā ʻāpana, a no ke kumu nui o ka mahu, ka wai, ke kinoea a me nā paipu ea.

Papa Nui

GR.A, GR.B

Mea Kimia

ʻAʻole ʻoi aku ka nui o kēia mau mea ʻelima ma mua o 1.00%.

B No kēlā me kēia 0.01% ka emi ʻana o ka nui o ka carbon content, ʻae ʻia ka nui o ka manganese e hoʻonui i ka 0.06%, akā ʻaʻole hiki ke kiʻekiʻe ma mua o 1.35%.

C ʻO kēlā me kēia 0.01% ka emiʻana o ke kalapona kalapona kiʻekiʻe eʻae i ka nui o ka manganese e hoʻonui i ka 0.06%, akā,ʻaʻole pono ka nui ma mua o 1.65%.

Waiwai Mekani

A ʻO ka lōʻihi liʻiliʻi o ka lōʻihi 2in. (50mm) e hoʻoholo ʻia e kēia ʻano kumu:

e=625000(1940)A^0.2/U^0.9

e = ka lōʻihi liʻiliʻi o ka anana 2in. (50mm), ka pākēneka i hoʻopuni ʻia i ka 0.5% kokoke loa;

A = helu ʻia e like me ke anawaena o waho o ka paipu inoa a i ʻole ka laula inoa o ka hāpana tensile a me kona mānoanoa pā i kuhikuhi ʻia, a hoʻopuni ʻia i kahi kokoke loa o ka hāpana tensile o 0.01 in.2 (1 mm2), a Hoʻohālikelike ʻia me 0.75in.2 (500mm2), ʻoi aku ka liʻiliʻi.

U = ka ikaika tensile palena iki, psi (MPa).

B No nā hui like ʻole o nā nui like ʻole o nā hōʻike hoʻāʻo tensile a me ka ikaika tensile haʻahaʻa i kuhikuhi ʻia, hōʻike ʻia ka elongation haʻahaʻa i koi ʻia ma ka Papa X4.1 a i ʻole ka Papa X4.2, e like me kona kūpono.

Koi hoao

ʻO ka hoʻāʻo tensile, ka hoʻāʻo ʻana, ka hoʻāʻo hydrostatic, ka hoʻāʻo uila nondestructive o nā welds.

Hiki ke hoolako

Hiki ke hoʻolako: 2000 Tons i kēlā me kēia mahina no ka papa o ASTM A53 / A53M-2012 Steel Pipe

Hoʻopili ʻia

I loko o nā pūʻolo a i loko o ka pahu lāʻau ikaika

Hāʻawi

7-14 mau lā inā ma ka waihona, 30-45 mau lā e hana ai

Uku

30% depsoit, 70% L/C a i ʻole B/L kope a i ʻole 100% L/C i ka ʻike

Huahana Huahana

Paipu paila

GB/T 8162-2008

ASTM A519-2006

BS EN10210-1-2006

ASTM A53/A53M-2012

GB9948-2006

GB6479-2013

GB/T 17396-2009