Steel Bar Gratings Specifications
Item	Description
Materials	Q235 / Stainless Steel / Aluminium
Material standard	Low carbon steel (ASTM A36, A1011, A569, S275JR, SS304, SS400,UK: 43A)
Type	Welded steel grating, pressure-locked, socket-welding
Bearing bar	20x5, 25x3, 25x4, 25x5, 30x3, 30x4, 30x5, 32x3, 32x5, 40x5, 50...75x8mm, etc.
Bearing Bar's Type	F- Plain style
	S-Serrated style (tooth-like)
	I- I-section style
Beraing Bar Pitch	25, 30, 30.16, 32.5, 34.3, 40, 50, 60, 62, 65mm, etc.
Cross Bar	5x5, 6x6, 8x8mm (twisted bar or round bar)
Cross bar pitch	40, 50, 60, 65, 76, 100, 101.6, 120, 130mm or as customers' requirement.
Surface Treatment	Black, Hot dip galvanized, Cold dip galvanized, Painted, Powder coated, or as customers' requirement.
Galvanizing standard	CN: GB/T13912
	US: ASTM (A123)
	UK: BS729
Standards	China: YB/T 4001.1-2007
	USA: ANSI/NAAMM(MBG531-88)
	UK: BS4592-1987
	Australia: AS 1657-1988
	Japan: JJS

Product	Material Specification	Federal Specification	Military Specification	Finish Specification
Light Duty Welded, Light Duty Press-Locked, Light Duty Swaged	--ASTM A-569 (1/8”, 3/16”, 1/4”) --ASTM A-36 (1/4”) by inquiry	ANSI/NAAMM MBG 531	MIL-G-18014 (Ships)	--Bare Steel --Galvanized per ASTM A-123 or A-385 --One shop coat mfg’s standard paint. Note: This is to protect grating during transit only, not intended as a permanent finish.
Heavy Duty Welded Steel	--ASTM A-36 (1/4”, 5/16”, 3/8”,1/2”) --Other (by inquiry)	AASHTO (American Association of State Highway and Transportation Officials) Standard Specifications For Highway Bridges ANSI/NAAMM MBG 532		--Bare Steel --Galvanized per ASTM A-123 or A-385 --One shop coat mfg’s standard paint. Note: This is to protect grating during transit only, not intended as a permanent finish.
Aluminum Press-Locked Aluminum Swaged Aluminum Flush Top Aluminum I-Bar	--Alloy 6063-T6 or Alloy 6061-T6 (special order) for bearing bars per ASTM B-221 --Alloy 6063 for cross bars per ASTM B-221	ANSI/NAAMM MBG 531	MIL-G-18014 (Ships)	--Mill Finish --Other (by inquiry)
Stainless Steel Welded Stainless Steel Press-Locked Stainless Steel Swaged	--Type 304 per ASTM A-167 (1/8” and 3/16”) --Other (by inquiry)	ANSI/NAAMM MBG 531	MIL-G-18014 (Ships)	--Welded: ‘As-welded’ --Press-Locked: Mill Finish --Other (by inquiry)

Steel Bar Grating Applications:

- flooring steel gratings
- stair treads
- sun shades
- drain covers
- security screen
- manhole covers
- mezzanine flooring
- earth mats
- shelving
- Stanchions (hand rails)
- trench covers

Steel Bar Grating FAQ:

Q1:Are you factory or trading company?

A:We are factory which located in ANPING city,,China.It's close to TIANJIN port,Welcome visit our factory

Q2: What 's your delivery time?

A:For one container products,normally 15-20days after your payment,we can finish the production.For large amount,we will discuss the time.

Q3:What 's your payment?

A:Generally, our payment term is T/T 30% in advance and the balance 70% against the copy of B/L. Other payment term we can also discuss.

Q4:How about the shipping?
A: We accept FOB or CIF or C&F trading terms,if you have shipping agent,we will contact them for shipping. If you don't have an agent,we will arrange the shipping for you. And we supply Master Bill of Lading.

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Steel Bar Grating Introduction:

Steel Bar Grating Specification:

Steel Bar Gratings Specifications

Item

Description

Materials

Q235 / Stainless Steel / Aluminium

Material standard

Low carbon steel (ASTM A36, A1011, A569, S275JR, SS304, SS400,UK: 43A)

Type

Welded steel grating, pressure-locked, socket-welding

Bearing bar

20x5, 25x3, 25x4, 25x5, 30x3, 30x4, 30x5, 32x3, 32x5, 40x5, 50...75x8mm, etc.

Bearing Bar's Type

F- Plain style

S-Serrated style (tooth-like)

I- I-section style

Beraing Bar Pitch

25, 30, 30.16, 32.5, 34.3, 40, 50, 60, 62, 65mm, etc.

Cross Bar

5x5, 6x6, 8x8mm (twisted bar or round bar)

Cross bar pitch

40, 50, 60, 65, 76, 100, 101.6, 120, 130mm or as customers' requirement.

Surface Treatment

Black, Hot dip galvanized, Cold dip galvanized, Painted, Powder coated, or as customers' requirement.

Galvanizing standard

CN: GB/T13912

US: ASTM (A123)

UK: BS729

Standards

China: YB/T 4001.1-2007

USA: ANSI/NAAMM(MBG531-88)

UK: BS4592-1987

Australia: AS 1657-1988

Japan: JJS

Product

Material Specification

Federal Specification

Military Specification

Finish Specification

Light Duty Welded, Light Duty Press-Locked, Light Duty Swaged

--ASTM A-569 (1/8”, 3/16”, 1/4”) --ASTM A-36 (1/4”) by inquiry

ANSI/NAAMM MBG 531

MIL-G-18014 (Ships)

--Bare Steel --Galvanized per ASTM A-123 or A-385 --One shop coat mfg’s standard paint. Note: This is to protect grating during transit only, not intended as a permanent finish.

Heavy Duty Welded Steel

--ASTM A-36 (1/4”, 5/16”, 3/8”,1/2”) --Other (by inquiry)

AASHTO (American Association of State Highway and Transportation Officials) Standard Specifications For Highway Bridges ANSI/NAAMM MBG 532

--Bare Steel --Galvanized per ASTM A-123 or A-385 --One shop coat mfg’s standard paint. Note: This is to protect grating during transit only, not intended as a permanent finish.

Aluminum Press-Locked Aluminum Swaged Aluminum Flush Top Aluminum I-Bar

--Alloy 6063-T6 or Alloy 6061-T6 (special order) for bearing bars per ASTM B-221 --Alloy 6063 for cross bars per ASTM B-221

ANSI/NAAMM MBG 531

MIL-G-18014 (Ships)

--Mill Finish --Other (by inquiry)

Stainless Steel Welded Stainless Steel Press-Locked Stainless Steel Swaged

--Type 304 per ASTM A-167 (1/8” and 3/16”) --Other (by inquiry)

ANSI/NAAMM MBG 531

MIL-G-18014 (Ships)

--Welded: ‘As-welded’ --Press-Locked: Mill Finish --Other (by inquiry)

Steel Bar Grating Applications:

Material
Specification

Federal
Specification

Military
Specification

Finish
Specification

Light Duty Welded,
Light Duty Press-Locked,
Light Duty Swaged

--ASTM A-569
(1/8”, 3/16”, 1/4”)
--ASTM A-36
(1/4”) by inquiry

ANSI/NAAMM
MBG 531

MIL-G-18014
(Ships)

--Bare Steel
--Galvanized per
ASTM A-123
or A-385
--One shop coat mfg’s
standard paint.
Note: This is to protect
grating during transit only,
not intended as
a permanent finish.

Heavy Duty
Welded Steel

--ASTM A-36
(1/4”, 5/16”, 3/8”,1/2”)
--Other (by inquiry)

AASHTO
(American
Association of
State Highway and
Transportation
Officials) Standard
Specifications
For Highway
Bridges
ANSI/NAAMM
MBG 532

--Bare Steel
--Galvanized per
ASTM A-123 or A-385
--One shop coat mfg’s
standard paint.
Note: This is to protect
grating during transit only,
not intended as
a permanent finish.

Aluminum Press-Locked
Aluminum Swaged
Aluminum Flush Top
Aluminum I-Bar

--Alloy 6063-T6 or Alloy
6061-T6 (special order)
for bearing bars per
ASTM B-221
--Alloy 6063 for cross
bars per ASTM B-221

ANSI/NAAMM
MBG 531

MIL-G-18014
(Ships)

--Mill Finish
--Other (by inquiry)

Stainless Steel Welded
Stainless Steel Press-Locked
Stainless Steel Swaged

--Type 304 per ASTM
A-167 (1/8” and 3/16”)
--Other (by inquiry)

ANSI/NAAMM
MBG 531

MIL-G-18014
(Ships)

--Welded: ‘As-welded’
--Press-Locked:
Mill Finish --Other (by inquiry)

- flooring steel gratings
- stair treads
- sun shades
- drain covers
- security screen
- manhole covers
- mezzanine flooring
- earth mats
- shelving
- Stanchions (hand rails)
- trench covers

Q1:Are you factory or trading company?

A:We are factory which located in ANPING city,,China.It's close to TIANJIN port,Welcome visit our factory

Q2: What 's your delivery time?

A:For one container products,normally 15-20days after your payment,we can finish the production.For large amount,we will discuss the time.

Q3:What 's your payment?

A:Generally, our payment term is T/T 30% in advance and the balance 70% against the copy of B/L. Other payment term we can also discuss.

Q4:How about the shipping?
A: We accept FOB or CIF or C&F trading terms,if you have shipping agent,we will contact them for shipping. If you don't have an agent,we will arrange the shipping for you. And we supply Master Bill of Lading.