ASTM A131 Marine Steel Phaj

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Gnee steel, steel mov los ntawm ntuj mus rau hiav txwv yog muaj, thoob ntiaj teb ncav cuag;

Cov yeeb nkab steel

Seamless steel yeeb nkab Alloy Steel Yeeb Nkab Carbon Steel Yeeb Nkab API Kab Yeeb Welded steel yeeb nkab Galvanized steel yeeb nkab Fittings

Stainless hlau

Stainless hlau kauj / Sheet Stainless hlau yeeb nkab Fittings

Hlau Phaj

Huab cua Resistant Steel Boiler Siab Vessel Steel Shipbuilding Steel Phaj Hnav Resistant Steel Phaj Hight Strength Tsawg Alloy Steel Carbon Steel Checkered Steel Phaj Alloy Steel Phaj

H Beam Lub kaum sab xis Channel Hlau Round Bars

Galvanized hlau

Galvanized Coil / Ntawv Prepainted Steel Chev Corrugated Roofing Sheet

Aluminium hlau

Automotive Steel

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Luv luv qhia txog marine steel phaj Tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab

Luv luv qhia txog marine steel phaj

Marine steel phaj hais txog cov qauv hlau siv hauv nkoj tsim. Nws suav hais tias yog qib marine thiab yuav tsum muaj peev xwm tiv taus cov teebmeem corrosive uas muaj nyob rau hauv ib puag ncig dej. Txhawm rau ua tiav qhov no, cov ntsiab lus tshwj xeeb alloying tau ntxiv rau cov qib no txhawm rau tiv thaiv kev tiv thaiv corrosion.Thaum cov pa roj carbon feem ntau tsis haum rau cov chaw nyob hauv dej hiav txwv, muaj ntau ntau qib marine carbon steels uas tau pom zoo los ntawm cov koom haum sib txawv rau kev siv nkoj tsim.

Cov qauv hlau rau lub nkoj hulls tau muab faib ua cov chav kawm muaj zog raws li nws qhov tsawg kawg nkaus yield zog: lub zog dav dav hlau thiab siab lub zog steel. Maine steel phaj hais txog kub dov steel phaj ua raws li cov kev cai ntawm lub classication haiv neeg rau kev tsim kho ntawm lub nkoj hull lug. Lub zog steel s ntawm Tuam Tshoj Classification Society tau muab faib ua plaub qib zoo: A B D thiab E.

Muaj 9 lub koom haum kev faib tawm tseem ceeb hauv ntiaj teb.
A.B.S American Bureau of Shipping
B.V. Bureau Veritas
C.C.S. Tuam Tshoj Classification Society
D.N.V. Det Norske Veritas
G.L. Germanischer Lloyd
K.R. Korean Register of Shipping
L.R. Lloyd's Register of Shipping
N.K. Nippon Kaiji Kyokai
R.I.N.A Registro Italiano Navale

ASTM A131 yog ib qib qauv ntawm steel phaj siv yuav luag tshwj xeeb hauv kev lag luam shipbuilding. Qib no txhais tau tias yog lub zog zoo tib yam nrog cov txiaj ntsig tsawg kawg nkaus ntawm 34KSI (235Mpa). Cov ntawv thov suav nrog cov nkoj nkoj, cov khoom siv hauv hiav txwv thiab kev tsim nkoj. Cov qib no kuj tau lees paub los ntawm American Bureau of Shipping (ABS)

Shipbuilding yog lub hauv paus rau Amelikas tus kheej thiab American ingenuity ci nyob rau hauv nws submarines, yachts, cruise ships, thiab aircraft carriers. Cov nkoj loj pib nrog cov qib siab zoo marine qib steel phaj thiab Gnee txaus siab los muab kev lag luam hauv Asmeskas kev lag luam nrog marine thiab offshore steel uas yog corrosion-resistant thiab tawv, ua kom pom kev txo qis, txawm tias nyob rau hauv txias txias, thiab muaj zog zog los tiv thaiv kev raug mob thiab kev vibration. Tag nrho peb cov phaj qib marine ua tau raws li cov qauv tsim los ntawm ABS (American Bureau of Shipbuilding), ASTM, thiab API (American Petroleum Institute). Peb yog cov chaw tsim khoom ntseeg siab ntawm marine & offshore steel phaj thoob ntiaj teb thiab kev pabcuam nkoj tsim khoom

Tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab

Chemical Requirement for Ordinary-Strength Structural Steel

Element	Qib A	Qib B	Qib D	Qib E	Qib CS
	Deoxidation thiab Thickness (t) hauv mm
	t> 2.0 nyob rau hauv (50mm)	t> 2.0 nyob rau hauv (50mm)	t> 1.0 nyob rau hauv (50mm)
C	0.21	0.21	0.21	0.18	0.16
Mn min	2.5 XC II	0.60	0.60	0.70	1.00
Si	0.50	0.35	0.10-0.35	0.10-0.35	0.10-0.35
P	0.035	0.035	0.035	0.035	0.035
S	0.035	0.035	0.035	0.035	0.035
Ni	-	-	-		-
Cr	-	-	-	-	-
Mo	-	-	-	-	-
Cu	-	-	-	-	-
C+Mn/6	0.40	0.40	0.40	0.40	0.40

Chemical Requirement for Higher-Strength Structural Steel

Element	Tshuaj muaj pes tsawg leeg (kub tsom xam% max
	AH/DH/EH32 AH/DH/EH36 and AH/DH/EH40	FH32/36/40
C	0.18	0.16
Mn	0.90-1.60	0.90-1.60
Si	0.10-0.50	0.10-0.50
P	0.035	0.025
S	0.035	0.025
Al min	0.015	0.015
Cb	0.02-0.05	0.02-0.05
V	0.05-0.10	0.05-0.10
Ti	0.02	0.02
Cu	0.35	0.35
Cr	0.20	0.20
Ni	0.40	0.40
Mo	0.08	0.08
N	-	0.009

Tensile Requirement for Ordinary-Strength and Higher-Strength Structural Steel

Qib	Tensile zog ksi (Mpa)	Yield zog min ksi (Mpa)	Elongation hauv 8 hauv (200mm)%	Elongation hauv 2 hauv (50mm) min%
Lub zog qub	58-75(400-520)	34(235)	21	24
A B D E CS	58-75(400-520)	34(235)	21	24
Siab zog
AH32 HH32 EH32 FH32	64-85(440-590)	46(315)	19	22
AH36 HH36 EH36 FH36	71-90(190-620)	51（355（	19	22
AH40 DH40 EH40 FH40	74-94（510-650）	57（390）	19	22