Round Precision Steel Cylinder Pipe GB/T 24187 Cold Drawn For Evaporator

Price Negotiable

Price: Negotiation

MOQ: 5 tons

Delivery Time: 45 days

Brand: New Era

Product Description

GB/T 24187 Cold-Drawn Precision Single Welded Steel Tubes

Spec:
Material:C Si Mn P S
Size Range:OD:3.18-18mm
WT:0.3-1.3mm
General Length:1.5-4m
Tolerance:
According to the following tables or customers’ request.

Table 1 Outer diameter, wall thickness and theoretical weight

OD/mm	WT/mm
	0.30	0.40	0.50	0.60	0.65	0.70	0.80	0.90	1.00	1.30
	theoretical weight /(kg/m)
3.18	0.0213	0.0274	0.0330
4.00	0.0274	0.0355	0.0432	0.0503
4.76	0.0330	0.0430	0.0525	0.0616	0.0659	0.0701
5.00	0.0348	0.0454	0.0555	0.0651	0.0697	0.0742
6.00	0.0422	0.0552	0.0678	0.0799	0.0858	0.0915	0.1026	0.1132	0.1233
6.35	0.0448	0.0587	0.0721	0.0851	0.0914	0.0975	0.1095	0.1210	0.1319
7.94	0.0565	0.0744	0.0917	0.1086	0.1169	0.1250	0.1409	0.1563	0.1712	0.2129
8.00	0.0570	0.0750	0.0925	0.1095	0.1178	0.1260	0.1421	0.1576	0.1726	0.2148
9.53	0.0683	0.0901	0.1113	0.1321	0.1423	0.1524	0.1722	0.1915	0.2104	0.2639
10.00	0.0718	0.0947	0.1171	0.1391	0.1499	0.1605	0.1815	0.2020	0.2220	0.2789
12.00	0.0866	0.1144	0.1418	0.1687	0.1819	0.1951	0.2210	0.2464	0.2713	0.3430
12.70	0.0917	0.1213	0.1504	0.1790	0.1932	0.2072	0.2348	0.2619	0.2885	0.3655
14.00	0.1014	0.1342	0.1665	0.1983	0.2140	0.2296	0.2604	0.2908	0.3206	0.4072
15.88	0.1153	0.1527	0.1896	0.2261	0.2441	0.2621	0.2975	0.3325	0.3670	0.4674
16.00	0.1162	0.1539	0.1911	0.2279	0.2461	0.2641	0.3000	0.3352	0.3699	0.4713
18.00	0.1310	0.1736	0.2158	0.2575	0.2781	0.2987	0.3393	0.3795	0.4192	0.5354
Theoretical weight of no additional coating, density of steel is 7.85 kg/

Table2 Allowable deviation of outer diameter of steel pipe

Outer diameter	Common precision	High precision
＜4.76	±0.08	±0.05
4.76-8.00	±0.12	±0.07
＞8.00-12.00	±0.16	±0.10
＞12.00	±0.20	±0.12

Table 3 Permissible deviation of steel tube wall thickness

Wall thickness	Permissible deviation
＜0.70	±0.05
≥0.70	±0.07

Table 4 Allowable deviation of specified length of steel pipe

Length	Allowable deviation
≤2000	+4 0
＞2000-5000	+7 0
＞5000-8000	+10 0

TABLE 5 Chemical Composition Of Steel Strip (Mass Fraction)%

Category	C	Si	Mn	P	S
Cold rolled low carbon steel strip	≤0.08	≤0.03	≤0.30	≤0.030	≤0.030
Cold rolled ultra low carbon steel strip	≤0.008	≤0.03	≤0.25	≤0.020	≤0.030

TABLE 6 Mechanical Properties Of Cold Rolled Low Carbon Steel Strip

Thickness /mm	Tensile Strength	Yield Strength	Elongation A/%
0.25~＜0.35	≥270		≥32
0.35~＜0.50			≥34
≥0.50			≥36
a Replace with when the yield phenomenon is not obvious. b Sample type of sample number D14 in GB/T 228-2002.

TABLE 7 Mechanical Properties Of Cold Rolled Ultra-low Carbon Steel Strip

Thickness /mm	Tensile Strength	Yield Strength	Elongation A/%
≤0.50	≥280	130~250	≥38
＞0.50	≥280	130~250	≥40
a Replace with when the yield phenomenon is not obvious. b Sample type of sample number P14 in GB/T 228-2002.

TABLE 8 Mechanical properties of steel pipe

Category	Tensile Strength	Yield Strength	Elongation A/%
Ordinary steel pipe(MA)	≥270	≥180	≥14
Soft steel tube(MB)	≥230	150~220	≥35
a Replace with when the yield phenomenon is not obvious. b Sample type of sample number S7 in GB/T 228-2002.