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GB1228 Carbon Steel Structure Mild Steel Hex Bolt

GB1228 Carbon Steel Structure Mild Steel Hex Bolt

MOQ: 900kg
Price: Negotiation
Standard Packaging: 25kg Carton+900kg/Pallet
Delivery Period: 30days
Payment Method: L/C, T/T,OA
Supply Capacity: 500TON/MONTH
Detail Information
Place of Origin
CHINA
Brand Name
QBH
Certification
ISO9001
Model Number
GB1228
Material:
Carbon Steel
Size:
1/2 To 1-1/2
Surface Treatment:
Plain,Zinc,Black,H.D.G
Grade:
A325
Process:
Cold Forging,Hot Forging
Sample:
Free Sample
Packaging:
25kg Carton+900kg/Pallet
Head Type:
Hex Head
Application:
Industry,BUILDING
Length:
10mm-800mm
Keyword:
HEAVY HEX STRUCTURAL BOLTS
Minimum Order Quantity:
900kg
Price:
Negotiation
Packaging Details:
25kg Carton+900kg/Pallet
Delivery Time:
30days
Payment Terms:
L/C, T/T,OA
Supply Ability:
500TON/MONTH
Highlight:

GB1228 mild steel hex bolt

,

Carbon mild steel hex bolt

,

mild steel Structure hex bolt

Product Description

Jiaxing Qunbang Hardware Co., Ltd. is a fastener manufacturer and supplier in China. We have many years of fastener export experience. GB1228 Steel Structure Bolt is a common fastener product, It has a wide range of applications. We have hexagonal head bolts in various sizes, Its thread size and thickness allow for better connection, It is usually used with a nut and a washer. We have good price and product inspection certificate, and we have free samples, Welcome to contact us.

 

GB1228 Steel Structure Bolt is a commonly used standard hexagon bolt, Its common size is M3-M60. Its general grade is 10.9, The material of carbon steel allows the surface to be galvanized, The black galvanizing will protect it from corrosion and rust, Appropriate size and spacing of threads for better connection, The commonly used hexagonal head makes its application field very wide. All our products come with ISO certificates, DIN 6914 Carbon Steel Black DIN6914 Steel Structural Hexagon Head Hex Heavy Bolt Have good after-sales, GB1228 Steel Structure Bolt Have good quality inspection Incoming quality contral( IQC)→Process Quality control(PQC)→Output quality control(OQC), and the random samples is sent to TUV for testing. If the customer received the goods and found quality problems, QBH company promises to be responsible for returning money or replenishing the goods, DIN6914 Steel structural hexagon heavy bolt Ten years warranty.

 

 

GB1228 Steel Structure Bolt application scenarios are very wide. The product massively applies in the bridge/road/the petroleum pipeline facility/the wind power generation and steel structure project.

 

 

 

 

 

GB1228 Carbon Steel Structure Mild Steel Hex Bolt 0

Screw Thread
d
1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2
ds max
min
s Nominal Size
max
min
e max
min
k Nominal Size
max
min
b Ref.
0.515 0.642 0.768 0.895 1.022 1.149 1.277 1.404 1.531
0.482 0.605 0.729 0.852 0.976 1.098 1.223 1.345 1.47
7/8 1-1/16 1-1/4 1-7/16 1-5/8 1-13/16 2 2-3/16 2-3/8
0.875 1.062 1.25 1.438 1.625 1.812 2 2.188 2.375
0.85 1.031 1.212 1.394 1.575 1.756 1.938 2.119 2.3
1.01 1.227 1.443 1.66 1.876 2.093 2.309 2.526 2.742
0.969 1.175 1.383 1.589 1.796 2.002 2.209 2.416 2.622
5/16 25/64 15/32 35/64 39/64 11/16 25/32 27/32 15/16
0.323 0.403 0.483 0.563 0.627 0.718 0.813 0.878 0.974
0.302 0.378 0.455 0.531 0.591 0.658 0.749 0.81 0.902
1 1.25 1.38 1.5 1.75 2 2 2.25 2.25

 

 

 

Note: In 2016, ASTM A490 was officially withdrawn and replaced by ASTM F3125, in which A490 now becomes a grade under the F3125 specification. The F3125 specification is a consolidation and replacement of six ASTM standards, including; A325, A325M, A490, A490M, F1852, and F2280. We are choosing to keep this technical information about the now obsolete A490 specification on our website for reference and informational purposes only.

 

 

Prior to its withdrawl in 2016, the ASTM A490 specification covered quenched and tempered, alloy steel, heavy hex structural bolts from 1/2″ diameter through 1-1/2″ diameter with a minimum 150 ksi tensile. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts. Refer to the Structural Bolts page of our site for thread lengths and other related dimensions. A490 bolts are similar in application and dimensions to A325 heavy hex structural bolts but are made from an alloy steel rather than a medium carbon steel, resulting in a higher strength fastener. The A490 specification is applicable to heavy hex structural bolts only. For bolts with different thread lengths than specified for structural bolts but with similar mechanical properties, see Specification A354 grade BD. ASTM A490 bolts shall not be coated by hot-dip galvanizing, mechanical deposition, or electroplating with zinc due to the potential risk of hydrogen embrittlement. ASTM has approved coating A490 bolts with Zinc/Aluminum Corrosion Protective Coatings per ASTM F1136 Grade 3, commercially called Geomet. Additional testing in the form of Magnetic Particle Inspection for Longitudinal Discontinuities and Transverse Cracks is a requirement of the A490 specification.

 

A490 Types

TYPE 1 Medium carbon and alloy steel.
TYPE 2 Withdrawn in 2002.
TYPE 3 Weathering steel.
   
M Metric A490.
 

A490 Connection Types

SC Slip critical connection.
N Bearing type connection with threads included in the shear plane.
X Bearing type connection with threads excluded from the shear plane.
 

A490 Mechanical Properties

Size Tensile, ksi Yield, ksi Elong. %, min RA %, min
1/2 - 1-1/2 150-173 130 14 40
 

A490 Chemical Properties

Type 1 Bolts
Element Sizes 1/2 to 1-3/8 Size 1-1/2
Carbon, max 0.30 - 0.48% 0.35 - 0.53%
Phosphorus, max 0.040% 0.040%
Sulfur, max 0.040% 0.040%
Alloying Elements * *
* Steel, as defined by the American Iron and Steel Institute, shall be considered to be alloy when the maximum range given for the content of alloying elements exceeds one of more of the following limits: Manganese, 1.65%, silicon, 0.60%, copper, 0.60%, or in which a definite range or a minimum quantity of any of the following elements is specified or required within the limits of the recognized field of constructional alloy steels: aluminum, chromium up to 3.99%, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium, zirconium or any other alloying elements added to obtain a desired alloying effect.
 

 

Type 3 Bolts
Element Sizes 1/2 to 3/4 Size above 3/4
Carbon 0.20 - 0.53% 0.30 - 0.53%
Manganese, min 0.40% 0.40%
Phosphorus, max 0.035% 0.035%
Sulfur, max 0.040% 0.040%
Copper 0.20 - 0.60% 0.20 - 0.60%
Chromium, min 0.45% 0.45%
Nickel, min 0.20% 0.20%
or    
Molybdenum, min 0.15% 0.15%
 

A490 Recommended Hardware

Nuts Washers
Type 1 Type 3 Type 1 Type 3
A563DH A563DH3 F436-1 F436-3
Note: Nuts conforming to A194 Grade 2H are a suitable substitute for use with A490 heavy hex structural bolts. Follow the link for an ASTM A563 Nut Compatibility Chart.
 

 

 

 

Process flow

 

Cold forging

Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ thread rolling ➨make heat treatmentFinish Packing

 

Hot forging

Cutting material hot forging turning shrink diameter(half thread)thread rolling make heat treatmentFinish Packing

 

 

 

 

 

Materials and Chemical compstition

 

 

1045

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.45 0.23 0.58 0.014 0.006 0.057 0.008 0.016

 

40CR

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.4 0.21 0.54 0.015 0.008 0.95 0.02 0.02

 

35CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.35 0.22 0.59 0.01 0.003 0.93 0.01 0.01 0.21

 

 

42CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.42 0.27 0.92 0.013 0.004 1.01 0.03 0.04 0.2

 

 

 

 

Finish

 

PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON

 

 

PACKING

 

QBH BULK

20-25KG/CTN,36CTNS/PALLET

20-30KG/BAGS,36BAGS/PALLET

ONE TON/BOXES

50KG/ IRON DRUM,12 IRON DRUMS/PALLET

 

QBH SMALL PACKING

Packing in small boxes according to customer’s requirements

Packing in plastic bag according to customer’s requirements

 

QBH PALLET TYPE

SOLID WOOD FUMIGATION PALLET

EURO Pallet

THREE SPLINT PALLET

WOODEN BOX

 

 

The advantages of QBH

  • QBH brand sales to the main quality assurance.
  • Years of export trade management, excellent service, word-of-mouth guarantee.
  • By working with TUV,escort for quality.
  • Customization of non-standard parts can be made according to customer's requirements and drawings.
  • For quality customers,we can provide a certain credit period
products
PRODUCTS DETAILS
GB1228 Carbon Steel Structure Mild Steel Hex Bolt
MOQ: 900kg
Price: Negotiation
Standard Packaging: 25kg Carton+900kg/Pallet
Delivery Period: 30days
Payment Method: L/C, T/T,OA
Supply Capacity: 500TON/MONTH
Detail Information
Place of Origin
CHINA
Brand Name
QBH
Certification
ISO9001
Model Number
GB1228
Material:
Carbon Steel
Size:
1/2 To 1-1/2
Surface Treatment:
Plain,Zinc,Black,H.D.G
Grade:
A325
Process:
Cold Forging,Hot Forging
Sample:
Free Sample
Packaging:
25kg Carton+900kg/Pallet
Head Type:
Hex Head
Application:
Industry,BUILDING
Length:
10mm-800mm
Keyword:
HEAVY HEX STRUCTURAL BOLTS
Minimum Order Quantity:
900kg
Price:
Negotiation
Packaging Details:
25kg Carton+900kg/Pallet
Delivery Time:
30days
Payment Terms:
L/C, T/T,OA
Supply Ability:
500TON/MONTH
Highlight

GB1228 mild steel hex bolt

,

Carbon mild steel hex bolt

,

mild steel Structure hex bolt

Product Description

Jiaxing Qunbang Hardware Co., Ltd. is a fastener manufacturer and supplier in China. We have many years of fastener export experience. GB1228 Steel Structure Bolt is a common fastener product, It has a wide range of applications. We have hexagonal head bolts in various sizes, Its thread size and thickness allow for better connection, It is usually used with a nut and a washer. We have good price and product inspection certificate, and we have free samples, Welcome to contact us.

 

GB1228 Steel Structure Bolt is a commonly used standard hexagon bolt, Its common size is M3-M60. Its general grade is 10.9, The material of carbon steel allows the surface to be galvanized, The black galvanizing will protect it from corrosion and rust, Appropriate size and spacing of threads for better connection, The commonly used hexagonal head makes its application field very wide. All our products come with ISO certificates, DIN 6914 Carbon Steel Black DIN6914 Steel Structural Hexagon Head Hex Heavy Bolt Have good after-sales, GB1228 Steel Structure Bolt Have good quality inspection Incoming quality contral( IQC)→Process Quality control(PQC)→Output quality control(OQC), and the random samples is sent to TUV for testing. If the customer received the goods and found quality problems, QBH company promises to be responsible for returning money or replenishing the goods, DIN6914 Steel structural hexagon heavy bolt Ten years warranty.

 

 

GB1228 Steel Structure Bolt application scenarios are very wide. The product massively applies in the bridge/road/the petroleum pipeline facility/the wind power generation and steel structure project.

 

 

 

 

 

GB1228 Carbon Steel Structure Mild Steel Hex Bolt 0

Screw Thread
d
1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2
ds max
min
s Nominal Size
max
min
e max
min
k Nominal Size
max
min
b Ref.
0.515 0.642 0.768 0.895 1.022 1.149 1.277 1.404 1.531
0.482 0.605 0.729 0.852 0.976 1.098 1.223 1.345 1.47
7/8 1-1/16 1-1/4 1-7/16 1-5/8 1-13/16 2 2-3/16 2-3/8
0.875 1.062 1.25 1.438 1.625 1.812 2 2.188 2.375
0.85 1.031 1.212 1.394 1.575 1.756 1.938 2.119 2.3
1.01 1.227 1.443 1.66 1.876 2.093 2.309 2.526 2.742
0.969 1.175 1.383 1.589 1.796 2.002 2.209 2.416 2.622
5/16 25/64 15/32 35/64 39/64 11/16 25/32 27/32 15/16
0.323 0.403 0.483 0.563 0.627 0.718 0.813 0.878 0.974
0.302 0.378 0.455 0.531 0.591 0.658 0.749 0.81 0.902
1 1.25 1.38 1.5 1.75 2 2 2.25 2.25

 

 

 

Note: In 2016, ASTM A490 was officially withdrawn and replaced by ASTM F3125, in which A490 now becomes a grade under the F3125 specification. The F3125 specification is a consolidation and replacement of six ASTM standards, including; A325, A325M, A490, A490M, F1852, and F2280. We are choosing to keep this technical information about the now obsolete A490 specification on our website for reference and informational purposes only.

 

 

Prior to its withdrawl in 2016, the ASTM A490 specification covered quenched and tempered, alloy steel, heavy hex structural bolts from 1/2″ diameter through 1-1/2″ diameter with a minimum 150 ksi tensile. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts. Refer to the Structural Bolts page of our site for thread lengths and other related dimensions. A490 bolts are similar in application and dimensions to A325 heavy hex structural bolts but are made from an alloy steel rather than a medium carbon steel, resulting in a higher strength fastener. The A490 specification is applicable to heavy hex structural bolts only. For bolts with different thread lengths than specified for structural bolts but with similar mechanical properties, see Specification A354 grade BD. ASTM A490 bolts shall not be coated by hot-dip galvanizing, mechanical deposition, or electroplating with zinc due to the potential risk of hydrogen embrittlement. ASTM has approved coating A490 bolts with Zinc/Aluminum Corrosion Protective Coatings per ASTM F1136 Grade 3, commercially called Geomet. Additional testing in the form of Magnetic Particle Inspection for Longitudinal Discontinuities and Transverse Cracks is a requirement of the A490 specification.

 

A490 Types

TYPE 1 Medium carbon and alloy steel.
TYPE 2 Withdrawn in 2002.
TYPE 3 Weathering steel.
   
M Metric A490.
 

A490 Connection Types

SC Slip critical connection.
N Bearing type connection with threads included in the shear plane.
X Bearing type connection with threads excluded from the shear plane.
 

A490 Mechanical Properties

Size Tensile, ksi Yield, ksi Elong. %, min RA %, min
1/2 - 1-1/2 150-173 130 14 40
 

A490 Chemical Properties

Type 1 Bolts
Element Sizes 1/2 to 1-3/8 Size 1-1/2
Carbon, max 0.30 - 0.48% 0.35 - 0.53%
Phosphorus, max 0.040% 0.040%
Sulfur, max 0.040% 0.040%
Alloying Elements * *
* Steel, as defined by the American Iron and Steel Institute, shall be considered to be alloy when the maximum range given for the content of alloying elements exceeds one of more of the following limits: Manganese, 1.65%, silicon, 0.60%, copper, 0.60%, or in which a definite range or a minimum quantity of any of the following elements is specified or required within the limits of the recognized field of constructional alloy steels: aluminum, chromium up to 3.99%, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium, zirconium or any other alloying elements added to obtain a desired alloying effect.
 

 

Type 3 Bolts
Element Sizes 1/2 to 3/4 Size above 3/4
Carbon 0.20 - 0.53% 0.30 - 0.53%
Manganese, min 0.40% 0.40%
Phosphorus, max 0.035% 0.035%
Sulfur, max 0.040% 0.040%
Copper 0.20 - 0.60% 0.20 - 0.60%
Chromium, min 0.45% 0.45%
Nickel, min 0.20% 0.20%
or    
Molybdenum, min 0.15% 0.15%
 

A490 Recommended Hardware

Nuts Washers
Type 1 Type 3 Type 1 Type 3
A563DH A563DH3 F436-1 F436-3
Note: Nuts conforming to A194 Grade 2H are a suitable substitute for use with A490 heavy hex structural bolts. Follow the link for an ASTM A563 Nut Compatibility Chart.
 

 

 

 

Process flow

 

Cold forging

Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ thread rolling ➨make heat treatmentFinish Packing

 

Hot forging

Cutting material hot forging turning shrink diameter(half thread)thread rolling make heat treatmentFinish Packing

 

 

 

 

 

Materials and Chemical compstition

 

 

1045

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.45 0.23 0.58 0.014 0.006 0.057 0.008 0.016

 

40CR

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu
0.4 0.21 0.54 0.015 0.008 0.95 0.02 0.02

 

35CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.35 0.22 0.59 0.01 0.003 0.93 0.01 0.01 0.21

 

 

42CRMO

CHEMICAL COMPOSI %
C Si Mn P S Cr Ni Cu Mo
0.42 0.27 0.92 0.013 0.004 1.01 0.03 0.04 0.2

 

 

 

 

Finish

 

PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON

 

 

PACKING

 

QBH BULK

20-25KG/CTN,36CTNS/PALLET

20-30KG/BAGS,36BAGS/PALLET

ONE TON/BOXES

50KG/ IRON DRUM,12 IRON DRUMS/PALLET

 

QBH SMALL PACKING

Packing in small boxes according to customer’s requirements

Packing in plastic bag according to customer’s requirements

 

QBH PALLET TYPE

SOLID WOOD FUMIGATION PALLET

EURO Pallet

THREE SPLINT PALLET

WOODEN BOX

 

 

The advantages of QBH

  • QBH brand sales to the main quality assurance.
  • Years of export trade management, excellent service, word-of-mouth guarantee.
  • By working with TUV,escort for quality.
  • Customization of non-standard parts can be made according to customer's requirements and drawings.
  • For quality customers,we can provide a certain credit period
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