Guardrail Bolts and Nuts

Applicable Standards

DIN931/933/912/DIN603, ASTM, JIS, BSW, 

Nonstandard bolt (according to your requirements) and etc.

Material and Grade

Material: High quality carbon steel.

Grade: 4.8, 5.8,   6.8, GR.2, A307.

Material: Alloy steel: 20MnTiB, 40Cr, 42CrMo.

Grade: 8.8,10.9,12.9,GR.2,GR.5,GR.8, A325-1,A490-1,GR.B7,GR.B7M.

Material:

Stainless steel: 302,304,305,316,304L,316L,410,430,carbon steel.

Grade: A2-50,A4-50, A2-70,A4-70,GR.B8,GR.B8M.

Surface Treatment

Part galvanization, Colorful galvanization, Army green galvanization, 

Black galvanization, Steam Black, Ash phosphorus, Brass, Nickel plate, 

Chrome plate, hot dipped galvanized, Zinc plated(yellow, black, green) or according to 

customers requirements.

Size

M6-M64 for customer’s option. For guard rails, usually M16*40/50

Certificate

ISO9001:2008

Packing

25kgs each carton,  40 cartons each pallet; or 50kgs each gunny bag, 

20bags each pallet; or at your options.