Mafi kyawun farashi don shingen bututun ƙarfe na China da Layin Samar da Bututu maras kyau
saboda ingantacciyar taimako, nau'ikan samfuran inganci da mafita iri-iri, tsadar tsada da isarwa mai inganci, muna jin daɗin shahara sosai tsakanin abokan cinikinmu. Mu kasuwanci ne mai kuzari tare da kasuwa mai faɗi don Mafi kyawun farashi don shingen bututun ƙarfe na China da layin samar da bututu mara nauyi, kasuwancinmu yana kula da ƙananan kasuwancin da aka kayyade tare da gaskiya da gaskiya don kula da dogon lokaci tare da abokan cinikinmu.
saboda ingantacciyar taimako, nau'ikan samfuran inganci da mafita iri-iri, tsadar tsada da isarwa mai inganci, muna jin daɗin shahara sosai tsakanin abokan cinikinmu. Mu kasuwanci ne mai kuzari tare da kasuwa mai faɗi donChina Seamless Karfe Tube, Farashin Tube Karfe, Mun kasance muna neman damar saduwa da duk abokai daga gida da waje don haɗin gwiwar nasara. Muna fatan samun hadin kai na dogon lokaci tare da dukkan ku bisa tushen samun moriyar juna da ci gaba tare.
Dubawa
Aikace-aikace
Ana amfani da bututun ne wajen jigilar mai, tururi da ruwan da ake dibarwa daga kasa zuwa kamfanonin mai da iskar gas ta bututun.
Babban Daraja
Daraja don bututun layin API 5L: Gr.B X42 X52 X60 X65 X70
Abubuwan Sinadari
| Matsayin Karfe (Sunan Karfe) | Ragowar Jama'a, Dangane da Zafafawa da Nazarin Samfura,g% | |||||||
| C | Mn | P | S | V | Nb | Ti | ||
| max b | max b | min | max | max | max | max | max | |
| Bututu mara kyau | ||||||||
| L175 ya da A25 | 0.21 | 0.60 | - | 0.030 | 0.030 | - | - | - |
| L175P ya da A25P | 0.21 | 0.60 | 0.045 | 0.080 | 0.030 | - | - | - |
| L210 ya da A | 0.22 | 0.90 | - | 0.030 | 0.030 | - | - | - |
| L245 ya da B | 0.28 | 1.20 | - | 0.030 | 0.030 | c,d | c,d | d |
| L290 ya da X42 | 0.28 | 1.30 | - | 0.030 | 0.030 | d | d | d |
| L320 ya da X46 | 0.28 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L360 ya da X52 | 0.28 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L390 ya da X56 | 0.28 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L415 ya da X60 | 0.28e ku | 1.40e ku | - | 0.030 | 0.030 | f | f | f |
| L450 ya da X65 | 0.28e ku | 1.40e ku | - | 0.030 | 0.030 | f | f | f |
| L485 ya da X70 | 0.28e ku | 1.40e ku | - | 0.030 | 0.030 | f | f | f |
| Welded Pipe | ||||||||
| L175 ya da A25 | 0.21 | 0.60 | - | 0.030 | 0.030 | - | - | - |
| L175P ya da A25P | 0.21 | 0.60 | 0.045 | 0.080 | 0.030 | - | - | - |
| L210 ya da A | 0.22 | 0.90 | - | 0.030 | 0.030 | - | - | - |
| L245 ya da B | 0.26 | 1.20 | - | 0.030 | 0.030 | c,d | c,d | d |
| L290 ya da X42 | 0.26 | 1.30 | - | 0.030 | 0.030 | d | d | d |
| L320 ya da X46 | 0.26 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L360 ya da X52 | 0.26 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L390 ya da X56 | 0.26 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L415 ya da X60 | 0.26e ku | 1.40e ku | - | 0.030 | 0.030 | f | f | f |
| L450 ya da X65 | 0.26e ku | 1.45e ku | - | 0.030 | 0.030 | f | f | f |
| L485 ya da X70 | 0.26e ku | 1.65e ku | - | 0.030 | 0.030 | f | f | f |
| ku ≤ 0.50 %; Ni ≤ 0.50 %; Cr ≤ 0.50 % da Mo ≤ 0.15 %. b Ga kowane raguwa na 0.01 % ƙasa da ƙayyadadden ƙididdiga don carbon, haɓakar 0.05% sama da ƙayyadadden ƙididdiga na Mn ya halatta, har zuwa iyakar 1.65 % don maki ≥ L245 ko B, amma ≤ L360 ko X52; har zuwa matsakaicin 1.75% na maki> L360 ko X52, amma <L485 ko X70; kuma har zuwa matsakaicin 2.00% don Grade L485 ko X70. c Sai dai in an yarda, Nb + V ≤ 0.06 %. d Nb + V + Ti ≤ 0.15 %. e Sai dai in akasin haka. Sai dai in an yarda da haka, Nb + V + Ti ≤ 0.15 %. g Ba a yarda da ƙarin B da gangan ba kuma ragowar B ≤ 0.001 %. | ||||||||
Kayan Injiniya
|
Bututu Grade | Jikin Bututu na Bututu mara sumul da Welded | Weld Seam na EW, LW, SAW, da SUNABututu | ||
| Ƙarfin Haɓakaa Rt0.5 | Ƙarfin Ƙarfia Rm | Tsawaitawa(a kan 50 mm ko 2 in.) Af | Ƙarfin Ƙarfib Rm | |
| MPa (psi) | MPa (psi) | % | MPa (psi) | |
| min | min | min | min | |
| L175 ya da A25 | 175 (25,400) | 310 (45,000) | c | 310 (45,000) |
| L175P ya da A25P | 175 (25,400) | 310 (45,000) | c | 310 (45,000) |
| L210 ya da A | 210 (30,500) | 335 (48,600) | c | 335 (48,600) |
| L245 ya da B | 245 (35,500) | 415 (60,200) | c | 415 (60,200) |
| L290 ya da X42 | 290 (42,100) | 415 (60,200) | c | 415 (60,200) |
| L320 ya da X46 | 320 (46,400) | 435 (63,100) | c | 435 (63,100) |
| L360 ya da X52 | 360 (52,200) | 460 (66,700) | c | 460 (66,700) |
| L390 ya da X56 | 390 (56,600) | 490 (71,100) | c | 490 (71,100) |
| L415 ya da X60 | 415 (60,200) | 520 (75,400) | c | 520 (75,400) |
| L450 ya da X65 | 450 (65,300) | 535 (77,600) | c | 535 (77,600) |
| L485 ya da X70 | 485 (70,300) | 570 (82,700) | c | 570 (82,700) |
| a Don matsakaicin maki, bambanci tsakanin ƙayyadadden ƙayyadaddun ƙarancin ƙarfi da ƙayyadaddun ƙayyadaddun ƙarfin amfanin ƙasa don jikin bututu zai kasance kamar yadda aka bayar a cikin tebur don matsayi mafi girma na gaba.b Don matsakaicin maki, ƙayyadaddun ƙarancin ƙarancin ƙarfi don kabu na weld. za su kasance daidai da ƙimar da aka ƙaddara don jikin bututu ta amfani da bayanin ƙasa a). c ƙayyadadden ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun elongation,Af, wanda aka bayyana a cikin kashi kuma aka zagaye zuwa kashi mafi kusa, za a ƙayyade ta amfani da ma'auni mai zuwa:
ina C shine 1940 don lissafin amfani da raka'a SI da 625,000 don ƙididdigewa ta amfani da raka'a USC; Axc shine yanki na juzu'in gwaji na tensile, wanda aka bayyana a cikin murabba'in millimeters (inci murabba'in), kamar haka: 1) don madauwari na gwajin yanki, 130 mm2 (0.20 in.2) don 12.7 mm (0.500 in.) da 8.9 mm (0.350 in.) ƙananan gwajin diamita; 65 mm2 (0.10 in.2) don 6.4 mm (0.250 in.) ƙananan gwajin diamita; 2) don cikakkun yanki na gwaji, ƙaramin a) 485 mm2 (0.75 in.2) da b) yanki na yanki na yanki na gwajin, wanda aka samo ta amfani da ƙayyadaddun diamita na waje da ƙayyadadden kauri na bangon bututu, zagaye zuwa mafi kusa 10 mm2 (0.01 in.2); 3) don guntun gwajin tsiri, ƙaramin a) 485 mm2 (0.75 in.2) da b) yanki na yanki na yanki na gwajin, wanda aka samo ta amfani da ƙayyadaddun nisa na yanki na gwajin da ƙayyadadden kauri na bangon bututun. , zagaye zuwa mafi kusa 10 mm2 (0.01 in.2); U shine ƙayyadadden ƙayyadaddun ƙarfin ƙarfi, wanda aka bayyana a cikin megapascals (fam a kowace inci murabba'i). | ||||
Diamita na waje, daga zagaye da kaurin bango
| Ƙayyadaddun Waje Diamita D (a) | Haƙurin diamita, inci d | Haƙuri na Ƙarfafawa a cikin | ||||
| Bututu banda karshen a | Ƙarshen bututu a,b,c | Bututu banda Karshen a | Ƙarshen bututu a,b,c | |||
| Farashin SMLS | Welded Pipe | Farashin SMLS | Welded Pipe | |||
| < 2.375 | -0.031 zuwa + 0.016 | - 0.031 zuwa + 0.016 | 0.048 | 0.036 | ||
| ≥2.375 zuwa 6.625 | 0.020D don | 0.015D don | ||||
| +/- 0.0075D | - 0.016 zuwa + 0.063 | D/t≤75 | D/t≤75 | |||
| Ta yarjejeniya don | Ta yarjejeniya don | |||||
| 6.625 zuwa 24.000 | +/- 0.0075D | +/- 0.0075D, amma mafi girman 0.125 | +/- 0.005D, amma mafi girman 0.063 | 0.020D | 0.015D | |
| > 24 zuwa 56 | +/- 0.01D | +/- 0.005D amma mafi girman 0.160 | +/- 0.079 | +/- 0.063 | 0.015D don amma max na 0.060 | 0.01D don amma max na 0.500 |
| Domin | Domin | |||||
| D/t≤75 | D/t≤75 | |||||
| Bisa yarjejeniya | Bisa yarjejeniya | |||||
| domin | domin | |||||
| D/t≤75 | D/t≤75 | |||||
| >56 | Kamar yadda aka amince | |||||
| a. Ƙarshen bututun ya haɗa da tsawon 4 a cinye kowane ɗayan bututun | ||||||
| b. Don bututun SMLS ana buƙatar haƙuri don t≤0.984in kuma haƙurin bututu mai kauri zai kasance kamar yadda aka yarda. | ||||||
| c. Don bututu mai faɗaɗa tare da D≥8.625in kuma don bututun da ba a faɗaɗa ba, ana iya ƙididdige haƙurin diamita da juriya na waje ta amfani da ƙididdige diamita na ciki ko auna cikin diamita maimakon ƙayyadaddun OD. | ||||||
| d. Don tantance yarda da jurewar diamita, an ayyana diamita na bututu azaman kewayen bututun a kowane yanki na kewayen da Pi ya raba. | ||||||
| Kaurin bango | Hakuri a |
| t inci | inci |
| SMLS bututu b | |
| 0.157 | -1.2 |
| 0.157 zuwa <0.948 | + 0.150t / - 0.125t |
| 0.984 | + 0.146 ko + 0.1t, duk wanda ya fi girma |
| - 0.120 ko - 0.1t, duk wanda ya fi girma | |
| Bututu mai walda c,d | |
| 0.197 | +/- 0.020 |
| 0.197 zuwa <0.591 | +/- 0.1t |
| 0.591 | +/- 0.060 |
| a. Idan odar siyan ya ƙididdige ƙarancin haƙuri don kaurin bango ƙasa da ƙimar da ake buƙata da aka bayar a cikin wannan tebur, ƙarin juriya na kauri na bango za a ƙaru da adadin da ya isa don kula da iyakar haƙurin da ya dace. | |
| b. Don bututu tare da D≥ 14.000 a cikin da t≥0.984in, haƙurin kauri na bango a gida na iya wuce ƙarin juriya don kauri na bango ta ƙarin 0.05t muddin ba a ƙetare ƙarin haƙuri ga taro ba. | |
| c. Haƙuri da ƙari ga kaurin bango baya shafi yankin walda | |
| d. Duba cikakken API5L ƙayyadaddun don cikakkun bayanai | |
Hakuri
Bukatar Gwaji
Gwajin Hydrostatic
Bututu don jure wa gwajin hydrostatic ba tare da yayyo ba ta cikin kabu ko jikin bututu. Ba dole ba ne a gwada masu haɗin haɗin gwiwa tare da samar da sassan bututun da aka yi amfani da su cikin nasara.
Lanƙwasa gwajin
Ba za a sami tsaga a kowane yanki na gwajin ba kuma ba za a buɗe walda ba.
Gwajin lallashi
Ma'auni na yarda don gwajin lallashi ya zama:
- EW bututu D<12.750 in:
- X60 tare da T500in. Ba za a sami buɗaɗɗen walda ba kafin nisa tsakanin faranti bai wuce 66% na ainihin diamita na waje ba. Ga duk maki da bango, 50%.
- Don bututu tare da D/t> 10, ba za a sami buɗaɗɗen walda ba kafin nisa tsakanin faranti ya kasance ƙasa da 30% na ainihin diamita na waje.
- Don wasu masu girma dabam koma zuwa cikakken ƙayyadaddun API 5L.
Gwajin tasiri na CVN don PSL2
Yawancin bututun PSL2 da maki suna buƙatar CVN. Za a gwada bututu marar sumul a cikin jiki. Za a gwada bututu mai walda a jiki, waldar bututu da yankin da zafi ya shafa. Koma zuwa cikakken ƙayyadaddun API 5L don ginshiƙi masu girma da maki da ƙimar kuzarin da ake buƙata.
