Nlereanya efu maka China ASTM A53/BS1387 eriri eriri na-ekpo ọkụ tinye galvanized steel Pipe
Nchịkọta
Onye ọ bụla n'ime ndị ọrụ anyị na-ahụ maka ego ha na-enweta nnukwu ego na-eji ihe ndị ahịa chọrọ yana nkwurịta okwu nzukọ maka ASTM A53/BS1387 Hot Dipped Galvanized Steel Pipe. Enwere m olileanya na anyị nwere ike ịbụ onye na-ebubata gị ntụkwasị obi na China. Na-atụ anya nkwado gị .N'ihe karịrị afọ 9 nke ahụmahụ na otu ọkachamara, anyị ebupụla ngwaahịa anyị n'ọtụtụ mba na mpaghara n'ụwa nile. Anyị na-anabata ndị ahịa, ndị otu azụmahịa na ndị enyi si n'akụkụ niile nke ụwa ka ha kpọtụrụ anyị ma chọọ nkwado maka uru otu.
Hot-mikpu galvanizing nwere uru nke otu mkpuchi, ike adhesion na ogologo ọrụ ndụ. Mgbagwoju anya nke anụ ahụ na kemịkal na-eme n'etiti matriks ọkpọkọ nchara na ihe ngwọta a wụrụ awụ ka ọ bụrụ oyi akwa zinc-ígwè alloy na-eguzogide corrosion nwere nhazi kọmpat. A na-ejikọta oyi akwa alloy na akwa zinc dị ọcha na matrix ọkpọ ígwè. Ya mere, nguzogide corrosion ya siri ike.
Ọ dị mkpa ịmara na 1960s na 1970s, mba ndị mepere emepe n'ụwa malitere ịmalite ụdị ọkpọkọ ọhụrụ ma jiri nwayọọ nwayọọ machibido ọkpọkọ galvanized. Ministri anọ na kọmitii gụnyere Ministry of Construction of China nyekwara akwụkwọ na-akọwa na amachibidoro ọkpọkọ galvanized site na 2000 gaa n'ihu. A naghị ejikarị ọkpọkọ galvanized eme ọkpọkọ mmiri oyi n'ime obodo ndị e wuru ọhụrụ, a na-ejikwa ọkpọkọ galvanized maka ọkpọkọ mmiri ọkụ na mpaghara ụfọdụ.
Ngwa
A na-eji ya eme ihe maka ike na akụkụ nrụgide, yana maka ebumnuche izugbe uzuoku, mmiri, gas na ọkpọkọ ikuku.
Isi ọkwa
GR.A, GR.B
Ngwakọta kemịkalụ
| Ọkwa | Akụkụ% ≤ | ||||||||
| C | Mn | P | S | KuA | NiA | CrA | MoA | VA | |
| Ụdị S (paịpụ enweghị nkebi) | |||||||||
| GR.A | 0.25B | 0.95 | 0.05 | 0,045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| GR.B | 0.30C | 1.20 | 0.05 | 0,045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| Ụdị E (Nguzogide welded ọkpọkọ) | |||||||||
| GR.A | 0.25B | 0.95 | 0.05 | 0,045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| GR.B | 0.30C | 1.20 | 0.05 | 0,045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| Ụdị F (Ọkụ Welded Pipe) | |||||||||
| A | 0.30B | 1.20 | 0.05 | 0,045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
A Nchikota nke ihe ise a agaghị agafe 1.00%.
B Maka 0.01% ọ bụla na-ebelata na ọdịnaya carbon kachasị elu, a na-ahapụ ọdịnaya manganese kachasị elu site na 0.06%, mana nke kachasị enweghị ike gafere 1.35%.
C Mbelata 0.01% ọ bụla na ọdịnaya carbon kacha elu ga-ekwe ka ọdịnaya manganese kachasị elu na-abawanye site na 0.06%, mana nke kachasị agaghị agafe 1.65%.
Ngwongwo igwe
| ihe | GR.A | GR.B |
| ike tensile, ≥, psi [MPa] Ike Mpụta, ≥, psi [MPa] Nlele 2in. ma ọ bụ 50mm elongation | 48 000 [330]30 000 [205] A, B | 60000 [415]35 000 [240]A,B |
A Nke kacha nta elongation nke nlele ogologo 2in. (50mm) ga-ekpebi site na usoro a:
e=625000(1940)A0.2/U0.9
e = kacha nta elongation nke nlele 2in. (50mm), pasent gbakọrọ na 0.5% kacha nso;
A = A gbakọọ dabere na dayameta mpụta akọwapụtara nke tube n'ọnụ ma ọ bụ obosara ọnụ nke ihe nlere anya na oke mgbidi ya akọwapụtara, wee gbachie ya na mpaghara obe kacha nso nke ihe nlere anya nke 0.01 in.2 (1 mm2). ma e jiri ya tụnyere 0.75in.2 (500mm2), nke ọ bụla dị ntakịrị.
U = a kapịrị ọnụ kacha nta ike tensile, psi (MPa).
B Maka nchikota dị iche iche nke nha dị iche iche nke ụdị ule nlegharị anya na ike mkpirisi nke kacha nta, egosiri elongation kacha nta achọrọ na Tebụl X4.1 ma ọ bụ Tebụl X4.2, dịka ọdabara ya si dị.
Achọrọ nnwale
Nnwale tensile, ule mgbada, nnwale hydrostatic, ule eletrik na-adịghị emebi emebi nke welds.
Ikike inye
Ikike ịnye: 2000 tọn kwa ọnwa kwa ọkwa nke ASTM A53/A53M-2012 Steel Pipe
Nkwakọ ngwaahịa
Na ngwugwu na igbe osisi siri ike
Nnyefe
7-14 ụbọchị ma ọ bụrụ na ngwaahịa, 30-45 ụbọchị na-emepụta
Ịkwụ ụgwọ
30% nkwụnye ego, 70% L / C ma ọ bụ B / L oyiri ma ọ bụ 100% L / C na anya
Nkọwa ngwaahịa
Igwe mmiri ọkụ Tube
GB/T 8162-2008
ASTM A519-2006
EN10210-1-2006
ASTM A53/A53M-2012
GB9948-2006
GB6479-2013
