ASTM A178 standard referes to electric-resistance-welded tubes with minimum-wall-thickness. Materials are carbon steel and carbon-manganese steel.
Exports erw pipes and tubes of different sizes and shapes,the same as other welded and seamless pipe, erw pipes or tubes can be delivered as beveled, threaded, coupled,surface treatment as black, bare or protective coating. Erw pipe and tubes also available in other steel grades: ASTM A53 structual pipe, API 5L line pipe, ASTM A252 pilling pipe.
Steel Grade | Element | Chemical Composition, % | ||
---|---|---|---|---|
Grade A, Low-Carbon Steel |
Grade C, Medium-Carbon Steel |
Grade D, Carbon-Man-ganese Steel |
||
ASTM A178 | 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 | |
Sulfur, max | 0.035 | 0.035 | 0.015 | |
Silicon | ... | ... | 0.10 min |
Steel Grade | WallThickness of Tubes, in. [mm] | Heightof Crushed Section, in. [mm] | |
---|---|---|---|
Grade A Tubes | Grade C and D Tubes | ||
ASTM A178 | 0.135[3.43] and under | 3/4[19] or until outside folds are in contact | Crushtests not required |
Over0.135 [3.43] | 11/4 [32] | ... |
ASTM A178 | Grade C | Grade D |
---|---|---|
Tensilestrength, min, kis [MPa] | 255 | 275 |
YieldStrength, min, ksi [MPa] | 415 | 485 |
Elongationin 2 in. or 50 mm, min, % | 30 | 30 |
ASTM STANDARD | UNS NO. | KOREA/JAPANES | GERMAN | BRITISH | BELGIAN | FRENCH | ITALIAN | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
KS/JIS Symbol | KS/JIS Numbe | Remarks | DIN Type | DIN Number |
Materiral Number |
Remarks | B.S Number |
B.S Grade | NBN Type | NBN Grade | Remarks | AFNOR Type | NF Number | Ramarks | UNI Type | UNI Number | Ramarks | |||
A 178 C-Steel Electric-Resistance-Welded Boiler Tubes |
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Grade A | K01200 | STBH 340/ STB 35 | D3563 / G3461 | St 37.8 | 17177 | 1.0315 | (7) | 3059 | ERW 320 | (3) | (3) | |||||||||
Grade c | K03503 | SHBH 410 / STB 42 | D3563 / G3461 | St 42.8 | 17177 | 1.0498 | (7) | (3) | (3) |
JIS | ASTM | BS | DIN | NF | ISO | Index Number | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Standard Number | Grade | Tupe | Standard Number |
Grade | Tupe | Standard Number |
Grade | Tupe | Standard Number |
Grade | Tupe | Standard Number | Grade | Tupe | Standard Number | Grade | Tupe | |
G3461 | STB340 | C | A161 | LC | C | 3059 | HFS320 | C | A49-245 | TS34e | C | C010 | ||||||
(STB35) | A192 | - | C | " | CFS320 | C | " | TS34c | C | |||||||||
A226 | - | C | " | ERW320 | C | |||||||||||||
A556 | GrA2 | C | " | CEW320 | C | |||||||||||||
A557 | GrA2 | C | " | S1 360 | C | |||||||||||||
" | S2 360 | C | ||||||||||||||||
" | ERW 360 | C | ||||||||||||||||
" | CEW360 | C | ||||||||||||||||
3606 | ERW320 | C | ||||||||||||||||
" | CEW320 | C | ||||||||||||||||
" | CFS320 | C | ||||||||||||||||
STB410 | C | A179 | GrC | C | 3059 | S1 440 | C | 17175 | St45.8 | C | A49-213 | TU42c | C | 2604/2 | TS9H | C | ||
(STB42) | A210 | GrA1 | C | " | S2 440 | C | 17177 | St42.8 | C | A49-215 | TU42c | C | " | TW9H | C | |||
A556 | GrB2 | C | " | ERW 440 | C | A49-243 | TS42c | |||||||||||
A557 | GrB2 | C | " | CEW 440 | C | A49-245 | TS42c | |||||||||||
3602 | HFS 410 | C | " | TS42c | ||||||||||||||
" | CFS 410 | C | ||||||||||||||||
" | ERW 410 | C | ||||||||||||||||
" | CEW 410 | C | ||||||||||||||||
3606 | ERW 440 | C | ||||||||||||||||
" | CEW 440 | C | ||||||||||||||||
" | CFS 440 | C | ||||||||||||||||
STB510 | C | C | 17175 | 19Mn5 | C | A49-213 | TU52C | C | 2604/2 | TS18 | C | |||||||
(STB52) | C | A49-248 | TU52C | C |
Specifications | Range |
Out Diameter | 1/2"-5" |
Wall Thickness | 0.035"-0.360" |
Chemical Properties | Grade A | Grade C | Grade D |
Low-Carbon | Medium-Carbon Steel | Carbon-Manganese Steel | |
C | 0.06-0.18 | 0.35 max | 0.27 max |
Mn | 0.27-0.63 | 0.80 max | 1.00-1.50 |
P | 0.035 | 0.035 | 0.030 |
S | 0.04 | 0.035 | 0.015 |
Si | - | - | 0.10 min |
Grade | Tensile Point (Mpa) | Yield Point (Mpa) | Elongation (%) in 2 in. or 50mm |
Grade C | 255 | 415 | 30 |
Grade D | 75 | 485 | 30 |