ASTM A709 mbale yachitsulo

Mafotokozedwe a ASTM A709 / A709M Mawonekedwe Okhazikika a Carbon ndi High-Strength Low-Alloy Structural Steel Shapes, Plates, ndi Bars ndi Zida Zachitsulo Zozimitsidwa ndi Zotentha za Bridges Products and Services / Miyezo & Zofalitsa / Miyezo Zogulitsa

Mndandanda wazinthu

Gnee zitsulo, zitsulo zoperekedwa kuchokera kumwamba kupita kunyanja zilipo, padziko lonse lapansi;

Chitoliro chachitsulo

Chitoliro Chachitsulo Chopanda Seam Chitoliro cha Chitsulo cha Aloyi Chitoliro cha Carbon Steel API Line Pipe Welded Steel Pipe Chitoliro Chachitsulo cha Galvanized Zosakaniza

Chitsulo chosapanga dzimbiri

Kolo wachitsulo chosapanga dzimbiri/Mapepala Chitoliro Chachitsulo chosapanga dzimbiri Zosakaniza

Chipinda chachitsulo

Chitsulo Chosagwira Nyengo Boiler Pressure Vessel Chitsulo Zomangira Zitsulo Plate Valani mbale yachitsulo yosamva Hight Strength Low Alloy Steel Carbon Chitsulo Checkered Steel Plate Alloy Steel Plate

Chitsulo Chozizira Chozizira

H Beam ngodya Channel Zitsulo Round Bars

Chitsulo cha Galvanized

Koyilo Wagalasi/Mapepala Prepainted Steel Coil Mapepala Omangira Padenga

Aluminium Metal

Automotive Steel

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Zambiri zamalonda Chemical composition & Mechanical katundu

Zambiri zamalonda

ASTM A709 ndi Standard Specification for Structural Steel for Bridges ndipo imaphatikizapo carbon, high-strong-low-alloy, ndi zitsulo zozimitsidwa ndi zowonongeka zomwe zimagwiritsidwa ntchito ngati mbale zomanga pomanga milatho. Gnee akupereka magiredi sanu wa A709; 36, 50, 50W, HPS 50W ndi HPS 70W. Magiredi atatu zanyengo a 50W, HPS 50W, ndi HPS 70W ali ndi ASTM G101 yolimbikitsidwa ndi Atmospheric Corrosion Resistance Index ya ≥6.0.

Chemical composition & Mechanical katundu

A709 Giredi 36 Chemical composition Kusanthula kwa kutentha

Makulidwe mm	Chitsulo cha zomangamanga	Chipinda chachitsulo				Round Bar zitsulo
Makulidwe mm	Chitsulo cha zomangamanga	≤20	20≤40	40≤65	65≤100	≤20	20≤40	40≤100
C, kuchuluka,%	0.25	0.25	0.25	0.25	0.27	0.26	0.27	0.28
Mayi,%	…	…	0.80-1.20	0.80-1.20	0.80-1.20	…	0.60-0.90	0.60-0.90
P, zazikulu,%	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04
S,kuchuluka,%	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05
Si	0.40 max	0.40 max	0.40 max	0.15-0.40	0.15-0.40	0.40 max	0.40 max	0.40 max
Ku, min,%	0.20	0.20	0.20	0.20	0.20	0.20	0.20	0.20

ndi 709g. 36 makina katundu

Gawo la A709	Wokhuthala mm	Zotuluka [MPa]	Tensile [MPa]	Elongtation Min%				kuchepetsa Min %	HB
				Chipinda chachitsulo		Chitsulo cha zomangamanga
				8 mu [200mm]	2 mu[50mm]	8 mu [200mm]	2 mu[50mm]
36[250]	≤100	[250] min	400-550	20	23	20	21	…	…
36[250]		[250] min	400 min	…	…	20	19	…	…
50[345]	≤100	345 min	450 min	18	21	18	21F	…	…
50S[345S]	G	345-450HI	450minH	…	…	18	21	…	…
50W[345W] HPS50W[HPS345W]	≤100	345 min	485mn	18	21	18	21j	…	…
HPS70W[HPS485W]	≤100	485mn	585-760	…	19k pa	…	…	…	…
100 [690], 100W [690W],HPS100W [HPS690W]	≤65	690 minB	760-895	…	18k pa	…	…	L	235-293M
100 [690], 100W [690W],	65-100	620 minB	690-895	…	16k	…	…	L	…