Hastelloy C-276 (UNS N10276) – Aloyi ya Nickel-Chromium-Molybdenum yo kurwanya ingese ku isi yose

Ibisobanuro bigufi:

Hastelloy C-276 (UNS N10276 /W.Nr. 2.4819 / NS334) ni aloyi ya nickel-chromium-molybdenum ifite tungsten yongewemo, izwi cyane nk'aloyi irwanya ingese. Womic Steel itanga Hastelloy C-276 mu buryo butandukanye bw'ibicuruzwa birimo umuyoboro udafite umugozi, umuyoboro wasutswe, icyuma gifunganye, icyuma gifunganye, icyuma gifunganye, icyuma gifunganye, icyuma gifunganye, icyuma gifunganye, icyuma gifunganye, insinga, na valve zo gutunganya imiti, peteroli, imyuka isesagura, imyuka yo mu mazi, ikoreshwa mu gutunganya imyanda ya kirimbuzi, no mu miti.


Ibisobanuro birambuye ku gicuruzwa

Ibirango by'ibicuruzwa

Incamake y'ibicuruzwa

Hastelloy C-276 ni yo aluminiyumu irwanya ingese nyinshi cyane iboneka muri iki gihe. Ifite karuboni nke cyane na silikoni itanga ubudahangarwa budasanzwe ku bidukikije, ingese, no kwangirika kw'ingese mu bidukikije bikomeye. Iyi aluminiyumu igaragaza ubudahangarwa budasanzwe ku mwuka wa chlorine utose, hypochlorite, chlorine dioxide, na chloride oxidizing. Ikora neza muri aside sulfuric, hydrochloric, na fosforiki mu bushyuhe bwinshi. Bitandukanye n'izindi aluminiyumu nyinshi zirwanya ingese, Hastelloy C-276 ikomeza kurwanya ingese nubwo yaba irimo ubushyuhe, bigatuma iba nziza cyane ku bikoresho by'ingenzi byo gutunganya imiti aho bikenewe gukora ubushyuhe. Iyi aluminiyumu irimo tungsten (3.0-4.5%) itanga ubudahangarwa bwimbitse ku ngese kandi yongera imikorere muri rusange mu bidukikije bikomeye.

Ibintu by'ingenzi biranga umuntu birimo:

  • Ubudahangarwa bw'ingese ku isi yosemu itangazamakuru ryinshi rikoresha iterabwoba
  • Ubudahangarwa budasanzwe ku kwangirika kw'ibinogo n'imirongo
  • Ubudahangarwa bwiza bwo kurwanya stress corruption
  • Ubudahangarwa bukomeye ku gasi ka chlorine itosena kloride zigabanya ubushyuhe
  • Ubudahangarwa kuri aside sulfuriki, hydrochloric, na fosforiki
  • Irinda ingese mu gihe ikoze mu buryo bwa svede
  • Karuboni nke na silikonikugira ngo hongerwe umutekano

Ibikoresho bya shimi

Igice Ibikubiye (%) Uruhare
Nickel (Ni) Kuringaniza Igice cy'ibanze, gitanga ubudahangarwa ku ingese
Chromium (Cr) 14.5 – 16.5 Ubudahangarwa bw'ingufu, butanga ubudahangarwa bw'ingufu mu bidukikije bigabanya ingufu
Molybdenum (Mo) 15.0 – 17.0 Ubudahangarwa bw'ibanze bwo kwangirika kw'ibinogo n'imirongo, ubudahangarwa bw'aside
Tungsten (Ub) 3.0 – 4.5 Ubudahangarwa bw'ingufu mu gace runaka, ubudahangarwa bw'aside
Icyuma (Fe) 4.0 – 7.0 Igice cy'imiterere, kugabanya ikiguzi
Cobalt (Kompanyi) ≤ 2.5 Ibisigaye, bigenzurwa mu bikorwa bya kirimbuzi
Karuboni (C) ≤ 0.010 Karuboni nke cyane irinda ubwiyongere bw'ingufu kandi igakomeza kurwanya ingese
Silikoni (Si) ≤ 0.08 Deoxidizer, irinda ingese cyane
Manganese (Mn) ≤ 1.0 Deoxidizer
Vanadium (V) ≤ 0.35 Gutunganya ibinyampeke
Fosifore (P) ≤ 0.030 Umwanda, ugenzurwa neza
Sulfure (S) ≤ 0.030 Umwanda, ugenzurwa neza

 

Imiterere ya mekanike

Imiterere y'ubushyuhe bw'icyumba (Yasubiwemo)

Umutungo Ibisabwa bya ASTM Ibisanzwe byagezweho
Imbaraga zo Gukurura ≥ 690 MPa (100 ksi) 690 – 860 MPa
Imbaraga z'umusaruro (0.2% ku gipimo cyo kugabanya) ≥ 283 MPa (41 ksi) 283 – 350 MPa
Kurekura ≥ 40% 40 – 55%
Ubukomere ≤ 100 HRB 85 – 95 HRB
Ubucucike 8.89 g/cm³  
Urugendo rwo Gushonga 1325 – 1370°C  
Ubushobozi bwo gutwara ubushyuhe kuri 20°C 10.2 W/m·K  
Igipimo cy'ubushyuhe (20-100°C) 11.0 × 10⁻⁶/°C  
Modulus irashya 208 GPa  
Ubushobozi bwo kwihanganira amashanyarazi bwa rukuruzi Ntirikoresha ingufu za rukuruzi  

Imiterere ya Mekanike ikoresha ubushyuhe bwinshi

Ubushyuhe °C Imbaraga zo Gukurura (MPa) Imbaraga z'umusaruro (MPa)
20 690 – 860 283 – 350
100 645 260
200 610 240
300 580 220
400 540 210
500 500 200
600 460 190

 

Ibyiza by'ingenzi bya Hastelloy C-276

Ubudahangarwa bw'Ingese ku Isi– Hastelloy C-276 izwiho kuba aloyi irwanya ingese kurusha izindi zose muri iki gihe. Itanga ubudahangarwa bwiza kuri aside igabanya ogisijeni n'igabanya, bigatuma ikoreshwa aho inzira zishobora gutandukana hagati yo gukwirakwiza ogisijeni n'igabanya. Aloyi ikora neza muri aside sulfurike, aside hidrokloriki, aside fosforiki, aside nitrike, na aside organic zitandukanye.

Ubudahangarwa budasanzwe bwo kurwanya ingese no gushonga kw'imigozi– Ingano ya molybdenum nyinshi (15-17%) itanga ubudahangarwa budasanzwe ku myobo no kwangirika mu bidukikije birimo chloride. Iyi alloy irarwanya cyane kwangirika mu mazi yo mu nyanja no mu bindi bice by’amazi bikaze bya chloride. Ubudahangarwa bwayo ku myobo buruta cyane icyuma cya 316L kitarangwamo ifu n’ibindi bikoresho byinshi bishingiye kuri nikeli.

Ubudahangarwa bwiza bwo kwangirika kw'imitsi– Hastelloy C-276 irangwa no kurwanya cyane kwangirika kw'ingufu ziterwa na chloride. Iyi alloy ntabwo irwanya SCC mu duce twa chloride aho ibyuma bya austenitic stainless bishobora kwangirika. Ibi bituma ikoreshwa cyane mu nganda zo mu mazi, mu bya shimi, no mu bya peteroli.

Ubushuhe n'ubudahangarwa nyuma yo gusudira– Bitandukanye n’andi manini arwanya ingese, Hastelloy C-276 ikomeza kurwanya ingese mu gihe ikoze mu buryo bwa plastike. Iyi plastike ntikenera ubushyuhe nyuma yo gusudira kugira ngo igarure ubudahangarwa n’ingese. Ubudahangarwa bwayo ku kubora kw’ingufu butuma iba nziza ku bikoresho bigoye gukora mu nganda zitunganya imiti n’ibikomoka kuri peteroli.

Ubudahangarwa na Gazi ya Chlorine Itose– Hastelloy C-276 irangwa no kurwanya cyane gaze ya chlorine itose, hypochlorite, chlorine dioxide, na chloride oxidizing. Iyi alloy ikoreshwa cyane mu bikorwa birimo chlorine n'ibinyabutabire birimo chlorine aho ibindi bikoresho byinshi byangirika vuba.

Ubudahangarwa kuri aside ya sulfure na fosiforike– Iyi aloyi igaragaza ubudahangarwa bwiza kuri aside sulfuriki mu rugero runini rw’ubushyuhe buringaniye. Irwanya kandi aside phosphorike, bigatuma ikoreshwa mu gukora ifumbire ya fosifeti n’izindi serivisi za aside phosphorike.

Ingufu nziza z'ubushyuhe buri hejuru– Hastelloy C-276 igumana imikorere myiza ya mekanike mu bushyuhe buri hejuru. Iyi aluminiyumu igumana ubudahangarwa bwayo n'ubuziranenge bwayo mu bidukikije bishyuha cyane, kandi irwanya ubushyuhe bugera kuri 400°C.

Iyubahirizwa rya NACE MR0175 / ISO 15156– Hastelloy C-276 yujuje ibisabwa kugira ngo ikoreshwe mu nganda za peteroli na gaze, irwanya gucika kwa sulfide stress (SSC) no gucika kwa hydrogen induced (HIC) mu bidukikije birimo H₂S.

Impapuro z'ibicuruzwa biboneka muri Womic Steel

Umuyoboro Udapfundikiye n'Umuyoboro Udapfundikiye

  • Ingano yo hanze:6mm – 300mm
  • Ubunini bw'urukuta:1mm – 30mm
  • Uburebure:Kugeza kuri metero 12
  • Amahame ngenderwaho:ASTM B622, ASTM B829, ASME SB-622
  • Porogaramu:imiyoboro ihindura ubushyuhe, imiyoboro ikoresha imiti, uburyo bwo gufata aside, imashini zikora imiti
  • Amagambo y'ingenzi:Umuyoboro udafite umugozi wa Hastelloy C-276, umuyoboro wa UNS N10276, umuyoboro wa 2.4819, umuyoboro udafite umugozi wa C-276

Umuyoboro ushongeshejwe

  • Ingano yo hanze:50mm – 1200mm
  • Ubunini bw'urukuta:1.0mm – 25mm
  • Amahame ngenderwaho:ASTM B619, ASTM B626, ASME SB-619, ASME SB-626
  • Porogaramu:Imiyoboro minini y'ubugari, sisitemu zo gukuraho imyuka ihumanya, imashini zikora imiti
  • Amagambo y'ingenzi:Umuyoboro wa Hastelloy C-276 ushongeshejwe, umuyoboro wa alloy C-276 ERW, umuyoboro munini wa nikeli

Urubaho rw'icyuma (Rwuzengurutse, Rurerure, Rugororotse, Hex)

  • Ingano:6mm – 300mm
  • Ubuso:Ishyushye cyane, Irabagirana (ishushanyije ukonje), Ifite hasi, Irahindukiye
  • Amahame ngenderwaho:ASTM B574, ASME SB-574
  • Porogaramu:Inkingi z'amavalu, ibifunga, imigozi, ipompo, ibikoresho byo gutunganya, ibikoresho
  • Amagambo y'ingenzi:Udupira tw'uruziga twa Hastelloy C-276, UNS N10276, agapira k'icyuma ka nikeli

Isahani y'icyuma n'urupapuro

  • Ubunini:1mm – 100mm
  • Ubugari:Kugeza kuri 2500mm
  • Amahame ngenderwaho:ASTM B575, ASME SB-575
  • Porogaramu:Ibikoresho by'ubwato, amasahani yo guhanagura ubushyuhe, ibice by'imiterere, ibisate by'ibice by'urukiramende, imiringoti y'ibigega by'imiti
  • Amagambo y'ingenzi:Icyapa cya Hastelloy C-276, urupapuro rwa C-276 rw'aluminiyumu, icyapa cya N10276

Igikoresho cy'icyuma n'umukandara

  • Ubunini:0.5mm – 6.0mm
  • Ubugari:10mm – 1500mm
  • Amahame ngenderwaho:ASTM B575
  • Porogaramu:Ibice byakozwe, imivure, ingingo zo kwagura, imiyoboro, imiyoboro y'inkuta nto
  • Amagambo y'ingenzi:Hastelloy C-276 coil, agace k'icyuma ka nikeli

Ibikoresho by'imiyoboro n'ibikoresho by'imiyoboro

  • Ubwoko:Ijosi, Gushishura, Gutabona, Gusunikira mu cyuho, Gusunikira mu ruziga, Guhuza imigozi, Ihuriro ry'imigozi
  • Ingano:1/2" – 48"
  • Igipimo cy'umuvuduko:Icyiciro cya 150 - Icyiciro cya 2500
  • Amahame ngenderwaho:ASTM B564, ASME SB-564, ASME B16.5, ASME B16.47
  • Ibikoresho:Inkokora, Tees, Reducers, Caps, Stub Ends, Couplings
  • Amagambo y'ingenzi:Ibyuma bya Hastelloy C-276, ibikoresho by'imiyoboro ya alloy C-276, icyuma cya UNS N10276 cyo kusudira mu ijosi

Imashini zo gucura

  • Ubwoko:Impeta, disiki, imigozi, imiyoboro ya valve, ibice bya pompe, imiterere yihariye
  • Uburemere:Kugeza kuri 3.000kg kuri buri gice
  • Amahame ngenderwaho:ASTM B564, ASME SB-564
  • Amagambo y'ingenzi:Hastelloy C-276 forging, impeta ya alloy C-276, bloki ikoze mu buryo bw'ibumba

Valves za Hastelloy C-276

  • Ubwoko:Vali z'umupira, Vali z'irembo, Vali z'umubumbe, Vali zo kugenzura, Vali z'iplagi
  • Ingano:1/2" – 24"
  • Igipimo cy'umuvuduko:Icyiciro cya 150 - Icyiciro cya 2500
  • Ingano y'ubushyuhe:-196°C kugeza +400°C
  • Amahame ngenderwaho y'igishushanyo mbonera:API 608, API 6D, BS 6364, ASME B16.34
  • Intebe:Ifite isura ikomeye ya Stellite, PCTFE (cryogenic), RPTFE, PEEK
  • Ibikorwa:Amaboko, Amazi y'umuyaga, Amashanyarazi
  • Porogaramu:Serivisi ikomeye y'imiti, gucunga aside, imashini zikora imiti, serivisi ya chlorine yoroshye
  • Amagambo y'ingenzi:Valve y'umupira ya Hastelloy C-276, valve y'irembo ya alloy C-276, valve irwanya ingese

Insinga n'Isoko

  • Umurambararo w'insinga:0.5mm – 12mm
  • Impeshyi:Gukora impeshyi ku buryo bwihariye
  • Amahame ngenderwaho:ASTM B574
  • Amagambo y'ingenzi:Insinga ya Hastelloy C-276, amasoko ya aloyi ya C-276, insinga ya aloyi ya nikeli

Hastelloy C-276 vs Inconel 625 vs Incoloy 825

Umutungo Hastelloy C-276 Inconel 625 Incoloy 825
Ibikubiye muri nikeli Kuringaniza ≥58% 38-46%
Ibikubiye muri Chromium 14.5-16.5% 20-23% 19.5-23.5%
Ibikubiye muri molybdenum 15-17% 8-10% 2.5-3.5%
Ibikubiye muri Tungsten 3-4.5% Nta na kimwe Nta na kimwe
Ibikubiye mu byuma 4-7% ≤5% ≥22%
Agaciro ka PREN ~67 ≥45 ~36
Ubudahangarwa bw'aside Icy'ikirenga Byiza Byiza cyane
Ubudahangarwa bwa Chlorine Itose Byiza cyane Byiza Iringaniye
Ubudahangarwa bwo Kugwa Icy'ikirenga Byiza cyane Byiza
Ubudahangarwa bw'amazi yo mu nyanja Icy'ikirenga Icy'ikirenga Byiza
Ubushuhe Byiza cyane Byiza cyane Byiza cyane
Ikiguzi Hejuru cyane Hejuru Iringaniye

Igihe cyo guhitamo Hastelloy C-276:Gukoresha bisaba ubushobozi bwo kurwanya ingese cyane mu bidukikije birimo gaze ya chlorine itose, imigezi ivanze ya aside, n'ibikoresho bya chloride ikaze aho izindi alloys zinanirwa. Ubushobozi bwo kurwanya ingese mu buryo buhanitse butuma ikiguzi cyo hejuru kizamuka.

Igihe cyo guhitamo Inconel 625:Gukoresha bisaba ubushobozi bwo kurwanya ingese no gukomera mu bushyuhe bwinshi. Ni byiza cyane mu mazi yo mu nyanja no mu bidukikije bitanga ogisijeni, kandi bifite imbaraga nziza mu bushyuhe buri hejuru kurusha C-276.

Igihe cyo guhitamo Incoloy 825:Gukoresha bisaba ubushobozi bwo kurwanya ingese mu bidukikije birimo aside ku giciro gito. Ni byiza cyane kuri serivisi ya aside sulfuri na fosifore, ikwiriye serivisi ya sour, ariko ifite ubushobozi bwo kurwanya ingese nkeya kurusha C-276 cyangwa 625.

Imikoreshereze ya Hastelloy C-276

Gutunganya imiti– Hastelloy C-276 ikoreshwa cyane mu byuma bitanga ubushyuhe, mu byuma bihindura ubushyuhe, mu nkingi z’amazi, mu miyoboro y’amazi, mu mashini zikoresha imiti ihumanya irimo aside sulfurike, aside hydrochloric, aside phosphoric, chlorine, na aside organic. Uburyo iyi alloy irwanya ingese butuma ikoreshwa mu bikorwa aho imyuka ishobora gutandukana cyangwa aho imiterere yayo idagenzurwa neza.

Serivisi yo gukoresha Chlorine yo mu mazi– Iyi alloy ni yo ikoreshwa cyane mu gutunganya imyuka ya chlorine itose, harimo inganda zikora liquefaction ya chlorine, sisitemu zo kumisha chlorine, gukora chlorine dioxide, no gukora hypochlorite. Ubudahangarwa bwayo ku mvange ya chlorine itose na chlorine ntagereranywa n'ibindi bikoresho byinshi.

Gukuraho imyuka ihumanya ikirere (FGD)– Hastelloy C-276 ikoreshwa muri sisitemu za FGD mu nganda zikoresha amakara ku minara yo gushyushya, imiyoboro ishyushya, ibice by'umwuka w'ubushyuhe, ibitera imbaraga, imiyoboro y'amazi, n'imiyoboro y'amazi. Ubudahangarwa bw'iyi aloyi ku bidukikije birimo aside na chloride butuma ikora igihe kirekire muri izi gahunda zikomeye.

Inganda z'ibinyampeke n'impapuro– Iyi alloy ikoreshwa mu byuma bisya impumuro, ibikoresho byo gusibanganya, no mu buryo bwo kugarura imiti aho usanga hakunze kubaho imiti ikaze n'ubushyuhe bwinshi.

Imiti n'Itunganywa ry'Ibiryo– Hastelloy C-276 ikoreshwa mu byuma bitunganya imiti, mu byuma bitunganya ibiribwa, no mu bikoresho bitunganya ibiribwa aho kurwanya ingese no gusukura ibicuruzwa ari ingenzi cyane. Kurwanya ingese bituma imiti cyangwa ibiryo bitanduzanya.

Gutunganya imyanda ya kirimbuzi– Iyi aloyi ikoreshwa mu gutunganya imyanda ya kirimbuzi no mu bigo bitunganya imyanda ifite imirasire aho hakenewe ubudahangarwa kuri aside nitrike n'ibidukikije bifite imirasire.

Inyanja n'Inyanja– Hastelloy C-276 ikoreshwa mu miyoboro y’amazi yo mu nyanja, ibikoresho byo ku mbuga n’ibindi bice byo munsi y’inyanja aho kurwanya imyobo iterwa na chloride n’ingufu ari ngombwa.

Peteroli na Gazi– Iyi alloy ikoreshwa mu gukora imyuka ihumanya, ibikoresho byo mu mazi, no mu nzira zo munsi y’inyanja zisaba kurwanya H₂S, CO₂, na chloride corruption. Iyubahirizwa ryayo rya NACE MR0175 / ISO 15156 rituma habaho imikorere yizewe mu gutanga serivisi ishyushye.

Amahame n'Ibisobanuro

Ifishi y'igicuruzwa Igipimo cya ASTM Igipimo cya ASME
Umuyoboro/Umuyoboro Udakora ASTM B622, ASTM B829 ASME SB-622, SB-829
Umuyoboro ushongeshejwe ASTM B619, ASTM B626 ASME SB-619, SB-626
Akabari/Inkoni ASTM B574 ASME SB-574
Isahani/Urupapuro/Igice ASTM B575 ASME SB-575
Imashini zo gucura ASTM B564 ASME SB-564
Ibikoresho byo gushyiramo ASTM B366 ASME SB-366
Ishyirwa mu bikorwa rya UNS N10276  
Nimero ya Werkstoff 2.4819  
Ishyirwa mu bikorwa rya DIN NiMo16Cr15W  
Igishinwa kingana NS334  

 

Ibibazo Bikunze Kubazwa

Q: Kuki Hastelloy C-276 ifatwa nk'icyuma "kirwanya ingese" kidakwirakwira hose?

A: Hastelloy C-276 itanga ubudahangarwa budasanzwe kuri aside igabanya ogisijeni n'igabanya, gaze ya chlorine itose, chloride, n'ibindi bikoresho byinshi birwanya ubukana. Kuba ikora neza mu bintu byinshi byangiza ibidukikije bituma ikoreshwa ahantu hashobora gutandukana cyangwa aho aside zivanze ziboneka. Nta yindi alloy itanga ubudahangarwa bungana n'ubwo bwangiza.

Q: Ni irihe tandukaniro riri hagati ya Hastelloy C-276 na Inconel 625?

A: Hastelloy C-276 ifite molybdenum nyinshi (15-17% ugereranije na 8-10%) kandi ikubiyemo tungsten (3-4.5%), itanga ubushobozi bwo kurwanya ingese no gucika kw'imiyoboro, cyane cyane mu kugabanya aside. Inconel 625 irimo niobium yo gukomeza kandi ifite imbaraga zo mu bushyuhe bwinshi kurusha C-276. Hitamo C-276 kugira ngo urwanye ingese cyane; hitamo 625 kugira ngo urwanye ingese n'imbaraga zo mu bushyuhe bwinshi.

Q: Ese Hastelloy C-276 ikenera gushyushya nyuma yo gusudira?

A: Oya. Kimwe mu byiza by'ingenzi bya Hastelloy C-276 ni uko ikomeza kurwanya ingese mu gihe ikoze mu buryo bwa slide. Ingano nke ya karuboni na silikoni mu cyuma gikoze muri alloy ituma idashobora kwangirika no kwangirika hagati y’ibice by’ibumba hatabayeho ubushyuhe nyuma yo gushyushya.

Q: Ese Hastelloy C-276 ikwiriye gukoreshwa mu mazi yo mu nyanja?

A: Yego. Hastelloy C-276 irangwa no kurwanya ingese n'imyobo mu mazi yo mu nyanja. Ikwiriye imiyoboro y'amazi yo mu nyanja, ibikoresho bya platifomu yo mu nyanja, n'ibice byo munsi y'inyanja aho ingese ya chloride ihangayikishije.

Q: Ni iyihe ngano ya Hastelloy C-276 mu Bushinwa?

A: Ingano y'igishinwa ingana na NS334 (耐蚀合金). Nanone ikunze kuvugwaho izina ryayo rya UNS N10276 na Werkstoff nimero 2.4819.

Q: Ni izihe fomu z'ibicuruzwa biboneka kuri Hastelloy C-276?

A: Womic Steel itanga Hastelloy C-276 mu muyoboro udafite umugozi, umuyoboro ushongeshejwe, icyuma gifunganye, isahani y'icyuma, icyuma gifunganye, umugozi, flanges, imiyoboro, forgings, insinga, na valves. Ibisobanuro byuzuye by'ibicuruzwa n'ingano byanditse mu gice cy'ibicuruzwa biboneka.

Contact Womic Steel

Urubuga: www.womicsteel.com

Imeri: sales@womicsteel.com

Terefone / WhatsApp / WeChat:

Victor: +86 15575100681

Jack: +86 18390957568

Womic Steel – Umufatanyabikorwa wawe wizeye ku muyoboro wa Hastelloy C-276 (UNS N10276) udafite umugozi, umuyoboro wasutswe, icyuma gifunganye, icyuma gifunganye, icyuma gifunganye, icyuma gifunganye, ibyuma bifunganye, ibyuma bifunganye, ibyuma bifunganye, na valve zo gutunganya imiti, serivisi ya chlorine yoroshye, imyuka ivamo flue, imiti n'imyanda ya kirimbuzi ku isi yose. Ikurikiranwa ryuzuye, kubahiriza amategeko ya NACE MR0175, icyemezo cy'ishyirahamwe ryo gushyira mu byiciro, hamwe n'inyandiko za EN 10204 Ubwoko bwa 3.1/3.2 zirahari.