Inches and meters

Relevance

In gas and water supply used steel pipes with inch diameter symbol. For example: 1″, 2″ or half inch, three quarter inch (½″, ¾″). If pipe diameter is 1″, then converted it — 33.5 mm, which is different from the conventional 1″ (25.4 mm). When assembling the valve, the aforesaid only inch sizes no problem. But replacing the steel «inch» pipe on the other, it is necessary to consider the discrepancy between inches metric actual dimensions.

Inner diameter

As for water flow important internal pipe diameter, usually indicate the inner diameter. But there are some generally accepted conventions of notation — inch common pipe has an inner diameter of 27.1 mm and inch reinforced — 25.5 mm. the fact that the most correct designation of the pipe in units of nominal bore DN (Dn) — which reflects the diameter of the lumen tubes and do not have units. DN (Dn) is specified in integers, and each step of the conditional passage increases the capacity of the pipe by 40−60%. For determining metric dimensions are checked against the table. When docking inch pipe with the other, metric, or replacement, use transition elements. This should take into account the real size metric pipe exterior and interior.

Conditional pass Exterior
diameter
Pipe
light common reinforced
inches mm Thickness
wall, mm
Weight of 1 m
(no couplings),
kg
Thickness
wall, mm
Weight of 1 m
(no couplings),
kg
Wall thickness, mm Weight of 1 m
(no couplings),
kg
- 6 10,2 1.8 0,37 2,0 0,40 2,5 0,47
¼ 8 13,5 2,0 0,57 2,2 0,61 2.8 0,74
3/8 10 17,0 2,0 0,74 0.80 0,98
½ 15 21,3 2,5 1.16 2,7 1,28 3,2 1,43
¾ 20 26,8 1,50 2,8 1,66 1,86
1 25 33,5 2,8 2.12 3,2 2,39 4,0 Of 2.91
1+¼ 32 42,3 2,73 3,09 3.78.
1+½ 40 48,0 3,0 3,33 3,5 3,84 4,34
2 50 60,0 4.22 4,88 4,5 6,16
2+½ 70 75,5 3,2 Of 5.71 4,0 Of 7.05 Of 7.88
3 80 88,5 3,5 Of 7.34 To 8.34 9,32
3+½ 90 101,3 8,44 9,60 10,74
4 100 114,0 4,0 10,85 4,5 12,15 5,0 Of 13.44
5 125 140,0 13,42 15,04 5,5 18,24
6 150 165,0 15,88 Of 17.81 21,63
Conditional pass Exterior
diameter
Thread
inches mm The number
threads on
1 inch
The length of the thread end, mm
conical cylindrical
long short
- 6 10,2 - - - -
¼ 8 13,5
3/8 10 17,0
½ 15 21,3 14 15 14 9,0
¾ 20 26,8 17 16 10,5
1 25 33,5 11 19 18 11,0
1+¼ 32 42,3 22 20 13,0
1+½ 40 48,0 23 22 15,0
2 50 60,0 26 24 17,0
2+½ 70 75,5 30 27 19,5
3 80 88,5 32 30 22,0
3+½ 90 101,3 35 33 26,0
4 100 114,0 38 36 30,0
5 125 140,0 41 38 33,0
6 150 165,0 45 42 36,0

To buy, price

The company «Electrocentury-steel» sells semi-finished products of aluminium and its alloys at the best price. Supply pipes of aluminium alloys in metric and inch dimensions. All the party goods have the quality certificate on conformity to requirements of standards and technical conditions. In the certificate marked by the manufacturer, drawing number, grade, chemical composition, mechanical properties, and results of additional tests, e.g., pressure testing, or testing. Implementation of orders in the shortest possible time. Wholesale customers receive wholesale discounts.

Our consultant will save your time!

Stanislas

Stanislas

sales department

+7 (905) 233-21-42