American standard malleable iron pipe fittings, category 300
- Certificate: FM Approved and UL Listed
- Surface: Hot-dip galvanized and black iron
- Standard: ASME B16.3
- Material: Malleable iron ASTM A197
- Discussion: NPT / BS21
- W. pressure: 300 P.S.I. 10 kg/cm at 550° F
- Surface: Hot-dip galvanized and black iron
- Tensile Strength:28.4 kg/mm(Minimum)
- Elongation:5% Minimum
- Zinc Coating: Each fitting 77.6 um, with an average of 86 um.
Available Size:

Item |
Size (inch) |
Dimensions |
Case Qty |
Special Case |
Weight |
|||||
Number |
A | B | C | D |
Master |
Inner |
Master |
Inner |
(Gram) |
|
H-L4502 | 1/4 | 20.6 |
360 |
180 |
180 |
90 | 73 | |||
H-L4503 | 3/8 | 22.3 |
240 |
120 |
120 |
60 | 114.5 | |||
H-L4505 | 1/2 | 25.4 |
80 |
40 |
40 |
20 | 175 | |||
H-L4507 | 3/4 | 28.7 |
60 |
30 |
30 |
15 | 274 | |||
H-L4510 | 1 | 33.3 |
40 |
20 |
20 |
10 | 442 | |||
H-L4512 | 1-1/4 | 38.1 |
24 |
12 |
12 |
6 | 699 | |||
H-L4515 | 1-1/2 | 42.9 |
16 |
8 |
8 |
4 | 920 | |||
H-L4520 | 2 | 50.8 |
12 |
6 |
6 |
3 | 1493.3 | |||
H-L4525 | 2-1/2 | 57.1 |
8 |
4 |
4 |
2 | 2234 | |||
H-L4530 | 3 | 64.0 |
4 |
1 |
4 |
1 | 3335 | |||
H-L4540 | 4 | 71.0 |
2 |
1 |
1 |
1 | 5680 |


Keep every pipe fitting that our Clients’ received is qualified.
1.Q:Are you a manufacturing or trading business?
A: We are a casting factory with more than 30 years of experience.
2.Q: What payment terms do you accept?
A: TTor L/C. 30% down payment required up front, with the remaining 70% due before to shipment.
3. Q: How long does it take you to deliver?
A: 35 days after the advance payment is received.
4. Q: Can I purchase samples from your factory?
A: Yes. There will be no cost trials.
5. Q: How long is the product warranty good for?
A: At least one year.
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