GB/T 6965-2026Basic conditions for testing fishing gear materials - Pre-tension (English PDF)

6.2 Fishing fibers, netting lines and netting sheets

6.2.1 Length measuring equipment The length of fishing monofilaments, net lines, and net panels is measured using a measuring tape with a graduation value of no more than 1 mm, an infrared rangefinder, or a laser rangefinder. Measuring equipment. For measuring the length of multifilament and other fiber samples, a yarn length gauge with a graduation value not exceeding 1 mm, an infrared rangefinder, or a laser is used. Length measuring equipment such as distance measuring instruments.

6.2.2 Balance The balance has an appropriate range and a sensitivity of no more than 0.001g.

6.2.3 Temperature and humidity measuring instruments The test site needs to be equipped with temperature and humidity measuring instruments. The accuracy of temperature measurement should not exceed 0.5°C, and the accuracy of relative humidity measurement should not exceed [missing value]. 3%, temperature and humidity measuring instruments should have continuous recording function.

7.2 Fishing fibers, netting lines and netting sheets

7.2.1 Measurement of temperature and humidity Use a thermometer and hygrometer to measure the ambient temperature and humidity of the test site.

7.2.2 Measurement of Length and Mass

7.2.2.1 Fishery Fiber Fishery fibers mainly include monofilaments and multifilaments, and the corresponding length and weight measurement methods are as follows:

a) Measure a 1m long monofilament using a length measuring instrument or similar length measuring device, then weigh the monofilament using a balance to obtain the mass of the 1m long monofilament. Measure m1, and the result is expressed in grams (g) and rounded to two decimal places.

b) Measure a 250m long bundle of multifilament using a yarn length measuring instrument or similar length measuring equipment, then weigh the multifilament using a balance to obtain the length of each bundle. The mass m2 of a 250m long multifilament is expressed in grams (g) and rounded to two decimal places.

c) Measure a single or bundle of other fishing fibers with a length of 1m using a length measuring device, and then weigh the other fishing fibers using a balance. The mass m3 of other fishing fibers with a length of 1m is obtained, and the result is expressed in grams (g) to two decimal places.

7.2.2.2 Network cable A 1-meter length of network cable was measured using a length measuring instrument or similar equipment, and then the cable was weighed using a balance to obtain the mass of the 1-meter length of network cable. The quantity is m4, and the result is expressed in grams (g) and rounded to two decimal places.

7.2.2.3 Mesh 7.2.2.3.1 Knotted mesh The methods for measuring the length and mass of knotted mesh sheets are as follows:

a) The submitting unit provided the mesh fabric for weaving. After weighing the mesh fabric using a balance, the mass m5 of 1m length of mesh fabric was obtained. The result is expressed in grams. (g) is the unit, rounded to two decimal places;

b) The submitting unit could not provide the network cable used for weaving, but after consulting standards and other materials, it obtained the linear density of the same specification network cable material, and thus passed the test. The mass m6 of a 1m length of wire mesh of the same specification was obtained by linear density calculation. The result is expressed in grams (g) and rounded to two decimal places.

c) The submitting unit was unable to provide the network cable used for weaving, and was unable to obtain the linear density of the same specification network cable material by consulting standards and other materials; First, cut one or more sections of wire from the mesh of the knotted mesh; then, use a length measuring device such as a vernier caliper to measure the length of the cut wire. The total length l1 of the network cable was obtained after the line was drawn, and the result was expressed in meters (m) to three decimal places; finally, the total length was measured using a balance. The mass of the network cable is m7, expressed in grams (g) and rounded to two decimal places. 7.2.2.3.2 Knotless mesh The methods for measuring the length and mass of knotless mesh samples are as follows:

a) Measure the mesh gauge thickness using vernier calipers, and obtain the wire material with the same mesh gauge thickness by consulting standards and other relevant materials. The linear density is then used to calculate the mass m8 of a 1m long eyelet of the same specification. The result is expressed in grams (g). Two decimal places;

b) The mesh size was measured using vernier calipers, but a mesh size of the same specification as the mesh size could not be obtained by consulting standards and other materials. The linear density of the wire material is measured by first cutting one or more sections from the mesh of the knotless mesh, and then measuring them using instruments such as vernier calipers. The total length l2 of the above-mentioned cut-off foot is given in meters (m) and rounded to three decimal places; then the cut-off foot is weighed using a balance. The total mass of the foot is m9, and the result is in grams (g) and rounded to two decimal places.

7.2.2.4 Number of Tests Unless otherwise agreed by both parties to the contract, the length and weight of fishing gear materials such as fishing fibers, net lines, and net sheets are generally measured once. However, as stipulated in the contract... Both parties agreed that the length and mass of the aforementioned fishing gear materials could be measured three times under standard atmospheric conditions, and the result would be the arithmetic mean of the three measurements. The value should be stated in the test report.

8.2 Fishing fibers, netting lines and netting sheets

8.2.1 Fishery Fiber Fishery fibers mainly include monofilaments and multifilaments, with the following pretensions.

a) Obtain 250m long monofilaments (such as polyethylene monofilaments or polyamide monofilaments) by controlling the length and quality of the monofilaments [see 7.2.2.1a)]. The weight is 245 mL Newtons (N), which is the force exerted on each monofilament when measuring its properties such as length, elongation, or linear density. Pre-tension, rounded to the nearest integer;

b) Obtain 250m long multifilaments (such as ultra-high molecular weight polyethylene fiber or polyester fiber) by controlling the length and quality of the multifilaments [see 7.2.2.1b)]. The self-weight of the fiber is

0.01 m^2 Newtons (N), which is the weight of each bundle of multifilaments when measuring properties such as length, elongation, or linear density. The applied pretension, rounded to the nearest integer;

c) Based on the length and mass of other fishing fibers [see 7.2.2.1c)], the self-weight of 250m of other fishing fibers is 2.45m^3. Newtons (N) are the electrical stress applied to each fiber or bundle of fibers when measuring properties such as length, elongation, and linear density of other fishing fibers. The pre-tension is taken as an integer.

8.2.2 Network cable By adjusting the length and quality of the mesh cable (see 7.2.2.2), a mesh cable of 250m length can be obtained (such as polyester mesh cable or ultra-high molecular weight polyethylene fiber). The self-weight of a network cable is

2.45 m^2 Newtons (N), which is the force exerted on each cable when its performance, such as length, elongation, or linear density, is measured. Pre-tension, rounded to the nearest integer.

8.2.3 Mesh

8.2.3.1 Knotted mesh The pretensions for different types of knotted wire mesh are as follows:

a) After the submitting unit provides the mesh cable for weaving, the unit shall obtain a 250m length of mesh cable by checking the length and quality of the cable [see 7.2.2.3.1a)]. The self-weight is

5 Newtons (N), which is the amount of electricity applied to each mesh during the testing of properties such as elongation at break of the knotted mesh. Pre-tension, rounded to the nearest integer;

b) The submitting unit cannot provide the wire mesh for weaving, but can obtain the linear density of the wire mesh by consulting standards and other materials, and by measuring the wire mesh length and... The mass [see 7.2.2.3.1b] yields a 250m long network cable with a self-weight of 2.45m^3/N, which is equivalent to a knotted network sheet. When measuring properties such as elongation at break, the pretension applied to each foot should be rounded to the nearest integer.

c) The submitting unit could not provide the wire mesh for weaving, and could not obtain the linear density of the wire mesh by consulting standards or other materials, thus failing to assess its length and quality. [See 7.2.2.3.1c], the self-weight of a 250m long network cable is 2.45m7/l

1 Newtons (N), which is the weight of the cable when the knotted mesh is in place. When measuring properties such as elongation at break, the pretension applied to each foot should be an integer.

8.2.3.2 Knotless mesh The pretension of different types of knotless mesh is as follows:

a) After obtaining the linear density of the same specification network cable material by consulting standards and other materials, the length and weight [see 7.2.2.3.2a)] are then used to obtain... The self-weight of a 250m long mesh of the same specification is 2.45m x

8 Newtons (N), which is the weight of the knotless mesh when its breaking elongation and other properties are measured. The pre-tension applied to each foot at a specific time is rounded down to the nearest integer.

b) When the linear density of the same specification network cable material cannot be obtained by consulting standards or other materials, it can be obtained by measuring the length and weight [see 7.2.2.3.2b)]. The self-weight of a 250m long mesh of the same specification is 2.45m9/l

2 Newtons (N), which is the breaking elongation of the knotless mesh. During performance testing, the pre-tension applied to each foot should be an integer. GB/T 6965-2026. Basic Conditions for Testing Fishing Gear Materials - Pre-tension ICS

56 National Standards of the People's Republic of China Replaces GB/T 6965-2004 Basic conditions for testing fishing gear materials. pre-tension Published on 2026-02-

27 Implemented on 2026-09-

01 State Administration for Market Regulation The State Administration for Standardization issued a statement.