ASTM A178 Tubing/ SA-178-A Boiler Tube

ASTM A178 Standard specification covers standards for electric-resistance-welded tubes with minimum-wall-thickness made of carbon steel and carbon-manganese steel to be used in boiler tubes, boiler flues, superheater flues, and safe ends. The steel shall be of Grades A (low-carbon steel), C (medium-carbon steel), or D (carbon-manganese steel). All tubes shall be submitted to heat treatment after welding, followed by cooling. The steel shall conform to stated compositions of carbon, manganese, phosphorus, sulphur, and silicon. Grades C and D shall conform to given tensile requirements, that is tensile strength, yield strength, and elongation. The material shall also be subjected to flattening, flange, tension, reverse flattening, and hydrostatic (or nondestructive electric) tests. Crush test shall also be performed if asked by the purchaser. Minimum elongation values are also given.

 

 

 

 

 

 

 

 

ASTM A178 Tubing/ SA-178-A Boiler Tube Features-

 

Low-temperature services serve at -45F°F (-45°C) Excellent strength and ductility.
Conductivity than alloy steels.
Higher strength with low coefficients of thermal.
Better weldability and greater toughness.

 

 

Specification of

ASTM A178 Tubing/ SA-178-A Boiler Tube-

 

Commodity name
A210 A178 cold drawing honing carbon Steel tubing
 
Dimension
OD:30-250mm, WT:2-30mm
 
Standard: GB/T8713, GB/T3639, DIN2391, EN10305, ASTMA519, ASTMA106-2006, API 5L, etc
DIN Standard
10#(ST37-2, ST35-8), 
20#(ST42, ST45-4/8), 
45#(DIN CK45), 
16mn(ST52.4) etc.
 JIS standard
10#(STPG38, STS38, STB30, STB33, Stb35), 20#(STPG42, STB42, STS42, JIS S20C), 45#(JIS S45C), 16mn(STS49, STPT49) etc.
ASTM/AISI standard
10#(ASTM a106/53 Gr.B, A192, A179-C), 20#(ASTM A106/53 Gr.B, A178-C, A210-A-1, A315-B, AISI1020), 45#(AISI1045), 16mn(ASTM A210-C) etc.
 
Technique
Cold drawing, cold rolling, hot rolling or hot expanding
 
Usage
Seamless steel pipes for low and medium pressure boiler, high pressure boiler, ship-building, liquid service , petroleum cracking, chemical fertilizer equipment, drawing-oil-equipment and structure purposes.
 
Package
steel strip bundles, black paint coating, beveled ends or plain
 
Payment terms
L/C or T/T(30% deposit and 70% balance against B/L copy)
 
Delivery
FOB, CIF, CFR, etc
 
Shipment
15 working days after getting payment

 

 

 

Package

Bundle packing.
Bevelled end or plain end or warnished as per buyer’s required
Marking: As per customer’s requests.
Painting varnish coating on the pipe.
Plastic caps at ends.

 

Supply range

 

Seamless steel pipe
ERW steel pipe
Steel casing
Tubing
Hot-rolled steel pipe
Spiral steel pipe
Hot-galvanized steel pipe

 

 

A178 Chemical Properties-

 

 

Grade A
Low-Carbon

Grade C
Medium-Carbon Steel

Grade D
Carbon-Manganese Steel

Carbon

0.06-0.18

0.35 max

0.27 max

Manganese

0.27-0.63

0.80 max

1.00-1.50

Phosphorus, max

0.035

0.035

0.030

Sulphur, max

0.04

0.035

0.015

Silicon

0.10 min

 

 

 

 

A178 Tensile Requirements-

 

Grade

 Tensile Point (Mpa)

 Yield Point (Mpa)

Elongation (%) in 2 in. or 50mm

 Grade C

 255

 415

30

 Grade D

 275

 485

30

 

Why Choose us?

 

 

Quick response in quotation, delivery, after-service.

Focus on pipe & tube solution for project application.

Third party inspection is accepted.

 

 

 

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