PC wire & PC strand – WE UP STEEL WIRE INDUSTRY

: pc wire – plain round wire

: pc wire – indented wire

: pc wire – spiral rib wire

Summary:
PC wire (Prestressed concrete wire) and PC strand (prestressed concrete strand) are the important material widely used in various industrial fields especially for infrastructure sectors.

Brief Introduction:
PC wire & PC strand (Prestressed concrete wire & strand) are broadly required and used in reinforcement of prestressed concrete structures, such as large-span bridges, overhead crane beam, railway sleepers, cement poles, prefabricated floor slabs & pipes, foundations, coal mines, stadiums, dams, multi-story buildings, nuclear power projections and etc.

PC wire is one sort of high carbon steel wire with carbon content of 0.65%-0.85% in percentage, and has the typical advantages of low relaxation, high tensile strength and excellent anti-fatigue characteristic, which lead to the applied structures in perfect performance and maximum safety. Just due to the various feartures, PC wire is divided into multiple series products, such as cold drawn wire, tempered & straightened wire, low relaxtion wire, galvanzied wire, indented wire and etc.

PC wire by cold drawn is generally used in railway sleeper and concrete with sizes of 3.0mm-5.0mm. Cold drawn PC wire is required by tempering treatment, when the lead temperature should be 460-500 in centigrade and wire temperature 890-930 in centigrade. Followed by tempering, the wire tensile strength should be 1100mpa-1200mpa and the metallographic structure changed into Sorbite which could be greatly helpful for further drawing after pickling and phosphating.

PC wire by tempered & straightened can get higher yield strength and relieve the stress as the termperature keeps 460-500 in cengtigrade.

PC wire with low relaxation as called stabilized PC wire is by tempering treatment under tension. After the stabilization, the wire extremity of elasticity and yiled strength both get improvement, meanwhile the wire stress relaxation rate greatly decreased.

PC wire by hot dip galvanization with zinc coating 250-350g per square meter can be applied for bridge cable, cesspit and such serious corrosive structures.

PC wire by indented treatment can be applied for concrete since it is able to improve its adhesive force with beton.

PC wire has a variety of three types in shape, plain round wires, spiral rib wires and indented wires, and accordingly to the PC strands construction of 1×2, 1×3, 1×7 and 1×19. For PC wire surface, there is a variety of delivery states, black(ungalvanzied) wire with anti-corrosion grease, pvc coated wire, hot dipped galvanized wire and Galfan(Zn-5%Al-rare earth alloy) coated wire.

PC wire and PC strand manufacturers are generally distributed in east China from the south up to the north. PC wire and PC strand price is mainly up to the technology variety and manufacturing standard.

: pc wire strand

: pc wire-spiral rib wire

: pc wire-plain round wire

PC wire (Prestressed concrete wire)

Apply for concrete, construction, electric power, bridge, mine and railway project
Standard: GB/T 5223-2014, GB/T5224-2014, ASTM-A416, BS 5896, JIS G3536, EN10138-3

Plain round wire (P)
Spiral rib wire (H)
Indented wire (I)

1) Initial tension should be 70-80% Maximum.
2) Relaxation rate on 1000 hours should be 2.5%-3.5% Maximum.
3) Elongation by GL=200MM Should be 3.5% Minimum.


DIA(MM)	T/S(MPA)	FEATURED TENSION (MIN. KN)	OBJECTIVE TENSION (MAX. KN)	0.2% YIELDING TENSION (MIN. KN)	BENDS TIMES/180D MIN.	BENDS RADIUS (MM)
4	1470	18.48	20.99	16.22	3	10
4.8	1470	26.61	30.23	23.35	4	15
5	1470	28.86	32.78	25.32	4	15
6	1470	41.56	47.21	36.47	4	15
6.25	1470	45.1	51.24	39.58	4	20
7	1470	56.27	64.26	49.64	4	20
7.5	1470	64.94	73.78	56.99	4	20
8	1470	73.88	83.93	64.84	4	20
9	1470	93.52	106.25	82.07	4	25
9.5	1470	104.19	118.37	91.44	4	25
10	1470	115.45	131.16	101.32	4	25
11	1470	139.69	158.7	122.59	—	—
12	1470	166.26	188.88	145.9	—	—

4	1570	19.73	22.24	17.37	3	10
4.8	1570	28.41	32.03	25	4	15
5	1570	30.82	34.75	27.12	4	15
6	1570	44.38	50.03	39.06	4	15
6.25	1570	48.17	54.31	42.39	4	20
7	1570	60.41	68.11	53.16	4	20
7.5	1570	69.36	78.2	61.04	4	20
8	1570	78.91	88.96	69.44	4	20
9	1570	99.88	112.6	87.89	4	25
9.5	1570	111.28	125.46	97.93	4	25
10	1570	123.31	139.02	108.51	4	25
11	1570	149.2	168.21	131.3	—	—
12	1570	177.57	200.19	156.26	—	—

4	1670	20.99	23.5	18.47	3	10
5	1670	32.78	36.71	28.85	4	15
6	1670	47.21	52.86	41.54	4	15
6.25	1670	51.24	57.38	45.09	4	20
7	1670	64.26	71.96	56.55	4	20
7.5	1670	73.78	82.62	64.93	4	20
8	1670	83.93	93.98	73.86	4	20
9	1670	106.25	118.97	93.5	4	25

4	1770	22.25	24.76	19.58	3	10
5	1770	34.75	38.68	30.58	4	15
6	1770	50.04	55.69	44.03	4	15
7	1770	68.11	75.81	59.94	4	20
7.5	1770	78.2	87.04	68.81	4	20

4	1860	23.38	25.89	20.57	3	10
5	1860	36.51	40.44	32.13	4	15
6	1860	52.58	58.23	46.27	4	15
7	1860	71.57	79.27	62.98	4	20

PC strand (Prestressed concrete strand)

1) Initial tension should be 70-80% Maximum.
2) Relaxation rate on 1000 hours should be 2.5%-4.5% Maximum.
3) Elongation by GL=400MM Should be 3.5% Minimum.

1X2
DIA (MM)	T/S (MPA)	FEATURED TENSION (MIN. KN)	OBJECTIVE TENSION (MAX. KN)	0.2% YIELDING TENSION (MIN. KN)
8	1470	36.9	41.9	32.5
10		57.8	65.6	50.9
12		83.1	94.4	73.1

5	1570	15.4	17.4	13.6
5.8		20.7	23.4	18.2
8		39.4	44.4	34.7
10		61.7	69.6	54.3
12		88.7	100	78.1

5	1720	16.9	18.9	14.9
5.8		22.7	25.3	20
8		43.2	48.2	38
10		67.6	75.5	59.5
12		97.2	108	85.5

5	1860	18.3	20.2	16.1
5.8		24.6	27.2	21.6
8		46.7	51.7	41.1
10		73.1	81	64.3
12		105	116	92.5

5	1960	19.2	21.2	16.9
5.8		25.9	28.5	22.8
8		49.2	54.2	43.3
10		77	84.9	67.8

1X3
DIA (MM)	T/S (MPA)	FEATURED TENSION (MIN. KN)	OBJECTIVE TENSION (MAX. KN)	0.2% YIELDING TENSION (MIN. KN)
8.6	1470	55.4	63	48.8
10.8		86.6	98.4	76.2
12.9		125	142	110

6.2	1570	31.1	35	27.4
6.5		33.3	37.5	29.3
8.6		59.2	66.7	52.1
8.74		60.6	68.3	53.3
10.8		92.5	104	81.4
12.9		133	150	117

8.74	1670	64.5	72.2	56.8

6.2	1720	34.1	38	30
6.5		36.5	40.7	32.1
8.6		64.8	72.4	57
10.8		101	113	88.9
12.9		146	163	128

6.2	1860	36.8	40.8	32.4
6.5		39.4	43.7	34.7
8.6		70.1	77.7	61.7
8.74		71.8	79.5	63.2
10.8		110	121	96.8
12.9		158	175	139

6.2	1960	38.8	42.8	34.1
6.5		41.6	45.8	36.6
8.6		73.9	81.4	65
10.8		115	127	101
12.9		166	183	146

1 X 3 (INDENTED)
8.7	1570	60.4	68.1	53.2
	1720	66.2	73.9	58.3
	1860	71.6	79.3	63

1X7
DIA (MM)	TENSILE STRENGTH (MPA)	FEATURED TENSION (MIN. KN)	OBJECTIVE TENSION (MAX. KN)	0.2% YIELDING TENSION (MIN. KN)
15.20 (15.24)	1470	206	234	181
	1570	220	248	194
	1670	234	262	206
9.50 (9.53)	1720	94.3	105	83
11.10 (11.11)		128	142	113
12.7		170	190	150
15.20 (15.24)		241	269	212
17.80 (17.78)		327	365	288
18.9	1820	400	444	352
15.7	1770	266	296	234
21.6	1770	504	561	444
9.50 (9.53)	1860	102	113	89.8
11.10 (11.11)		138	153	121
12.7		184	203	162
15.20 (15.24)		260	288	229
15.7		279	309	246
17.80 (17.78)		355	391	311
18.9		409	453	360
21.6		530	587	466
9.50 (9.53)	1960	107	118	94.2
11.10 (11.11)		145	160	128
12.7		193	213	170
15.20 (15.24)		274	302	241

1 X 7 (INDENTED)
12.7	1860	184	203	162
15.20 (15.24)	1860	260	288	229

1 X 7 (COMPRESSED)
12.7	1860	208	231	183
15.20 (15.24)	1820	300	333	264
18	1720	384	428	338

1 X 19 S (1+9+9)
DIA (MM)	T/S (MPA)	FEATURED TENSION (MIN. KN)	OBJECTIVE TENSION (MAX. KN)	0.2% YIELDING TENSION (MIN. KN)
28.6	1720	915	1021	805
17.8	1770	368	410	334
19.3		431	481	379
20.3		480	534	422
21.8		554	617	488
28.6		942	1048	829
20.3	1810	491	545	432
21.8	1810	567	629	499
17.8	1860	387	428	341
19.3		454	503	400
20.3		504	558	444
21.8		583	645	513

1 X 19 W (1+6+6/6)
28.6	1720	915	1021	805
	1770	942	1048	829
	1860	990	1096	854